Product Reviewed: 20W-50 Synthetic V-Twin Motorcycle Oil (MCV)
Current Rating: 4.9 out of 5 stars
Votes & Reviews: 445 vote(s) and 496 user reviews.
Reviewed by Timmy: 
I use this oil in my Harley Davidson. First time I used it in my 2013 Street Glide FLHX 103ci motor just got it back from putting a stage 4 Racing Kit in it and put almost 46.000 miles on it in 3 years and used the 60 weight full synthetic in the motor transmission and primary and changed it every 5000 miles witch didn't take long. It tuned on the dyno at 112 HP and 121 pounds of torque. After spending all that money on the engine I won't it a oil to keep it new inside with no ware on the parts and that's what I got from AMSOIL. Now I own a 2017 Street Glide 107ci and had some work done on that motor also and it is a BAD. It pulls the wheal 1st 2nd and 3rd gear and don't Know when to stop running. After the break in oil was ready to be changed I also had the motor work done on it also and had them to put the best in it. So Y not use the best oil so I had them put 20w 50 in all of Motor Transmission and Primary. Now I just turned it over to 4000 miles on the engine now after are last trip and I don't baby it I run it on the Interstate 80 85 90 depends on how the traffic is flowing and I will fall in and roll with it with no worries about my engine because I know its being protected and staying cooler and no ware and tare. Also the shifting is quitter and smoother and the Transmission like the Engine smooth and no ware and tare. Now I'm fixing to order me some AMSOIL because it is getting close to my oil change and don't forget about there Oil Filter It does the Job that no other filter can and that is all the bad stuff don't get through keep that oil Pure.
Reviewed by Easy ridden:
With all the lubricants out there, and all the claims how do you know you're getting the best protection. I use Amsoil then I know I'm getting the best protection.
Reviewed by JW:
I started using AMZOI: products a few years ago, signed up as a preferred customer and I am a true believer in their products My wife and I each ride Harley's and feel the AMZOIL full synesthetic lubricants are the best on the market. There are two things that will cause an engine to fail, heat and friction. Using AMZOIL is one of the best ways to prevent friction and protection for heat.
Reviewed by Carlos:
Keeps my bikes engine, trans,primary running smooth and cooler
Reviewed by Bigge:
After my initial break in of my bike, amsoil was introduced . Here in central Florida it gets really hot in stop and go traffic. In conjunction with my oil cooler and amsoil 20w-50 , I have piece of mind that my bike is well protected. Thanks amsoil.
Reviewed by Dan The Man:
I have been an Amsoil Preferred Customer for many years ,I use Amsoil for all of my vehicles and equipment. I have never had a single oil related failure, or any failure for that matter. I just did my first oil change on my 2017 Street Glide and noticed a difference right away in the running and smoothness of the engine. My only wish is that Amsoil will put together a "Kit" for the 2017 Harley Davidson Milwaukee 8 owners. We use 4.5 quarts of crankcase oil instead of 4 quarts. Help us oil Amsoil !
Reviewed by VI Medic:
What I noticed immediately was how much cooler the motor runs. I have used this product since my bike was new and won't consider using anything else.
Reviewed by Moose:
I've never had any motor problems running amsoil on my 3rd motorcycle , I run it in everything I own!!
Reviewed by Mike:
I use this in both my wife's and my Harley Davidson motorcycles.Very good oil
Reviewed by Chaindrive:
I've been using this oil ever since I bought my 2003 fatboy I probably change it to often but it is your engines life blood I still change it by 3000 miles and looks like you just poured it in ! Love this stuff!
Reviewed by Wayne L:
I purchased the 20w50 for my 1999 Harley Davidson Dyna Wide Glide. I will only use Amsoil in my motorcycle. It is the best oil I've ever used and I have used many other brands. I am confident in its ability to never break down or fail for any reason.
Reviewed by GRZ:
This oil has the best resistance for heat and distance. Runs my motor at least 10 degrees cooler than any other. Motor runs quiet, shifts smooth, oil does not break down under pressure.
If you have any questions about its performance hears my answer:
I have a 2001 Road King with over 200,000 miles.
I rebuilt the top end at 124,000 miles.
So the bottom end and the gear box are all original (200,000).
I ride it everyday. I don't baby it.
Oil change every 4,000 miles (Tranny every 8,000).
ANY OTHER QUESTIONS?
Reviewed by Tmac:
Easy pore bottles, great oil for our erratic climate changes.
Reviewed by Nino:
I've been using this product for my Harley over the years, and I find it works better than some of the other oils I tried. Although it would be nice if Amsoil would bring down their prices.
Reviewed by Tmac:
Easy pore bottles, great oil for our erratic climate changes.
Reviewed by Z-man:
Great product - engine works the best with this product over others I have tried.
Reviewed by Danger:
I've been running Amsoil in my motorcycle for over 10 years without any problems. My dad has been running it since the '70's from dirt bikes to Harley's.
Reviewed by twistedcherokee:
Keeps the engine cooler
Reviewed by RLM:
The only oil I put into my Harley Davidson.
Reviewed by Jimmy V:
Made my bike run quieter and cooler And perform better
Reviewed by J4bama:
Put this in my 2014 cvo breakout
Reviewed by Do not have one:
Only product I use in our Harley Davidson motorcycles. White report says it all, Amsoil in consistanly the best product on the market today.
Reviewed by Ed:
Runs cooler & quieter
Reviewed by Wolfway:
I have a 2010 Harley-Davidson CVO FLSTSE Softail Convertible with the 110 Screamin Eagle engine. Synthetic oil is required for this engine. I've been using AMSOIL 20/50 Synthetic for over 5 years and will continue to do so.
Reviewed by The Sheriff:
Great product that I use in my 2014 Harley Street Glide. I use it in the oil, transmission and primary. At 5000 miles it doesn't look or smell as bad as when I used the Harley Oil.
Reviewed by Johnny:
Used the 20/50 syn on my Harley's since 2008. Never had a problem. Keeps engine well protected and cooler. Just read science behind it and I'm sure you'll find it well worth trying.
Reviewed by Jroglass:
I made the switch from the H-D oil to Amsoil and immediately noticed an improvement in overall performance and will never switch back to H-D oil! My Honda Civic with 160,000+ miles was really dragging to get going, but after switching my car to Amsoil it accelerates like new again. I have no complaints and will be an Amsoil customer for years to come!
Reviewed by Nighthawk:
I run this in the engine .trans and the primary.. does very well . The temps are down about 3 to 5% which on a air cool engines is alot....
Reviewed by Joel:
I run this in my Harley. Love the product and great customer service. Everything I own with a motor has Amsoil running through it.
Reviewed by Giovongo:
Lower operating temperature than other oils
Reviewed by Nature boy:
Both my bikes.. all I buy.
Shipping should be free..
Reviewed by CMA servant:
Running Amsoil gives me confidence I can continue to ride all over the country without worry of engine wear issues. Immediate delivery of every order is another bonus with Amsoil.
Reviewed by Big Chief:
I ride my Dyna hard. I recently switched to Amsoil. My bike runs cooler and the valvetrain is quieter than with the former dealer brand. The only thing I wish is that the v twin oil change kit had the choice of black oil filter.
Reviewed by none:
There's no other engine oil that I would put in my Harley!
Reviewed by RENO:
I have been an AMSOil user for many years- in my cars, trucks, drag race cars, and my motorcycles. I have lived in South Texas, Northern NH, and now, the Tampa Bay area. They are the best lubricants I have ever used and notice the difference in the engines, transmissions, and differentials. These products perform as they are desribed!!
Reviewed by Joe:
The flexibility to use this on all of my bikes and their different components make it a must have.
Reviewed by Best in SA:
Outstanding product and great protection.
Reviewed by Bernie:
I have been using 20W-50 Amsoil Motorcycle oil for the last 150,000+ miles in the motor of my 2007 BMW R1200RT. I change
oil every 6,000+ miles and the oil usage has been unchanged.
I can highly recommend this product.
Reviewed by Racing girl:
Amsoil is the best oil I have ever used, it has longevity and helps keep your engine clean. I can get more kilometers between oil changes, all in all this is the perfect oil!
Reviewed by Gar:
Engine oil for 2016 FLS Slim.....newer engines run hot and need this oil....
Reviewed by Gar:
Engine oil for 2016 FLS Slim.....newer engines run hot and need this oil....
Reviewed by Russell:
I use this in my 2012 Harley road king . Motor runs quieter, sounds great .
Reviewed by Ray:
To keep my bikes running perfectly.....frank hope is my go to guy and he's very easy to get in touch with and very friendly...
Reviewed by Steve:
Been using this oil in my Harley's since 2008. Would never think of using anything else.
Reviewed by bearracing:
I love Amsoil 20w50 in my primary and oil tank in my Buell XB. Cool running engine, smoother shifts. Amsoil is great!
Reviewed by Moo:
Ran this oil in my bike since new 09 harley. Has 32000 and still runs great. Use a soil in all the cars and trucks too
Reviewed by Screamngeagle:
Great product will never use anything else in my Harley!!
Reviewed by big den:
Run your Motor Hard Ride SAFE
Reviewed by Hades02:
I use this in all of my motorcycles. When I purchased my Streetglide in 2015, the dealership performed an oil change. When the summer came and I got stuck in traffic, the bike started knocking bad when accelerating. That week I switched to what I use in my other bike and have not had that issue since.
Reviewed by painter:
I have run this oil in a high compression Harley engine for 50K miles without a problem. Have run in extreme heat without engine failure.
Reviewed by RJ:
I have used this product for over 15 years in my 3 Harley's, one of which has over 40k. Wouldn't use any other MC oil.
Reviewed by Harley dude:
I have been using this for years in my Harleys - wouldn't use anything else.
Reviewed by Firefingers:
This is my 4th Harley and I only use Amsoil This oil never loses viscosity in any temp.
we have all kinds of weather here in Texas, temps. from 0 to 110 -- so if you ride alot like I do
this oil covers all kinds of weather.
Reviewed by Eurovanman:
I bought a used 2007 R1200RT about 2 years ago and began using the 20W-50 synthetic. In Edmonton, Alberta, Canada we get big temperature differences if you start riding once the snow's gone and keep going until it arrives in the Fall. I also trailer it down to Phoenix to ride. Great product!
Reviewed by Joe:
Was using the OEM Synthetic and burned up a quart between oil changes switched to AMSOIL and no more loss of oil between changes.
Reviewed by Jake:
A little spendy but worth the peace of mind,. I have used it in all my bikes for last ten years.
Reviewed by Piebald:
Used exclusively in my 2015 Street Glide Special.
Reviewed by Stan:
I maintain 2 Harleys and this is the ONLY oil I would ever consider using. It really prevents overheating in hot weather.
Reviewed by Matt:
This is my first purchase with amsoil. I am using this in my 2006 Harley Davidson Street Glide. I have put about a 1000 miles on the first oil change and the engine seems to run cooler as promised. I'll know more about performance after my next oil change. Friends swear by amsoil who gear heads like me. I'm sure I'll be pleased. The prices for preferred customers are worth the initial fee. I plan on switching my diesel truck to amsoil 25,000 oil change once I use up my current brand.
Reviewed by Mike:
bought a new 2016 Harley Davidson ultra limited and after breaking in the engine and trans I switched to Amsoil lubes through out the whole bike. Engine, trans and primary case. I have used Amsoil interceptor in my snowmobiles for years and several thousand miles and have had no engine failures so I have good reason to expect the same excellent results in my new bike.
Reviewed by Michael:
I use this in my older wheelhorse it cools the motor by 12deg over regular oil .
Reviewed by Stephen:
My bikes, and others. Do light work for others would be nice to get the products a little cheaper in bulk
Reviewed by Larry:
I used Amsoil 20W50 V-Twin motorcycle oil for over 80,000 miles in my 2005 Harley and it was still running strong at 120,000 when I traded up to a 2016 Harley. I specified Amsoil at the 500 mile service and have rolled up 13,000 trouble free miles already. Looking forward to another 100,000.
Reviewed by Dave:
After breakin on my new rebuild stroker evo, I added this 20W-50 synthetic V-twin oil. Then set out for 5,380 mile road trip, 2 up in mostly 90-100+ F heat. Total oil added was less than 2 oz! No heating issues! Very impressed with this product.
Reviewed by Mark:
I use AMSOIL products in the Engine, Transmission and Primary case of all the Harley-Davidson motorcycles I've owned since I started riding after a 40 year hiatus in 2012.
I have also used AMSOIL in all of my air cooled Volkswagen powered vehicles for decades. You can't beat it's quality. The fact AMSOIL sells application specific lubricants that really ARE superior to
"universal" lubricants is a HUGE plus too.
Reviewed by Murray:
I use this in two cruisers and one sport bike, No complaints ,good service ,good price.
Reviewed by MEL:
Have used this oil in my Harley-Davidson motorcycles for 15 years, I believe it to be the best for air cooled big bore engines.
Reviewed by Robert:
Yamaha vmax 1700 cc
Reviewed by Brian:
Bike has almost 200,000 miles and runs cooler than any other oil I've tried.
Reviewed by Richard:
I only use amsol in my Harley's and amsoil in my boat I gained rpm on top end it proved its benefits
Reviewed by Stuart:
Only the best for my customers, this oil lowers the operating temperature of big twins by a few degrees compared to the HD product and is the only oil I stock.
Reviewed by David:
I am a motorcycle shop and use Amsoil exclusively in mine and my customer's motorcycles.
Reviewed by Kenny:
This is the only oil I have ever used in my Harleys and I plan to keep it that way. I've had zero issues with my bikes and they my oil temps never get out of control no matter how hot it gets in the summer.
Reviewed by Joseph:
Best oil on the market !
Runs cooler and lasts longer. I've run both coasts from Colorado, 3 different Harley's. Run amsoil in all my vehicles
Reviewed by Brian:
Awesome oil and very quick shipping time all my Harley's have Amsoil in them and NASCAR late models do as well great stuff
Reviewed by Richard:
Motorcyce
Reviewed by Lynn:
I use this in my 2004 ultra classic it seem to work real well in the hot weather. The only thing I've been disappointed in was the last price increase i may have to look at other options.
Reviewed by James:
Seems better than syn3 and costs less.
Reviewed by Lilik:
Running cooler👍
Reviewed by
Terry:
Some of the best oil I've ever run. Great for the Harley or the dirt bikes.
Reviewed by Robert:
Amsoil is the best. I could care less what anyone says. I am 50 & have tried plenty of oils & none can compare to Amsoil. My Harley runs cooler. Believe me, I live in Tucson Arizona. I am the crazy one riding around in 102 degrees. And you can tell if your scooter is running cooler. My legs are my thermometer. Amsoil works.
Reviewed by BRAD:
I use it in my 2016 Harley Davidson it is best oil on the market Hands Down!
Reviewed by Syed:
Great product super fast delivery
Reviewed by Marcus:
Excellent oil. Better than all of the oils I have ever used.
Reviewed by Ron:
Pro Atv Desert racer been running 20-50 now for the last 8yrs changing the oil after 2 races which average a couple hundred miles each and a few hrs of brutal punishment and harsh Arizona desert summer temps I replace the cylinder and piston at the end of Every season after over a 1000 miles and over a hundred total hrs in a season the piston and cylinder look as if they did when I installed them, the last 8yrs I have not had any engine failures of any sort and it's because of AMSOIL synthetics. I've seen so many guys I race with blow there engines time and time again during the season and they continue using their own preferences of oils and still have issues. I have so much confidence in AMSOIL when going racing that engine failures don't even cross my mind.........thank you AMSOIL for your continued sponsorship support and your hard work put in by your R&D department.......It's paying off....."!!!!!
Reviewed by
Gary:
Works great in my harley davidson trike in the engine and transmission.
Reviewed by Jack:
Have been running this oil for years in all my Harleys. Runs quieter and cooler than the HD Syn3. Have not had a single leak or burning issue in over 60K miles. Bought a 2016 CVO, and am running in it as well. Highly recommend this oil!
Reviewed by George:
Great oil
Reviewed by Robert:
Amsoil is the best. I could care less what anyone says. I am 50 & have tried plenty of oils & none can compare to Amsoil. My Harley runs cooler. Believe me, I live in Tucson Arizona. I am the crazy one riding around in 102 degrees. And you can tell if your scooter is running cooler. My legs are my thermometer. Amsoil works.
Reviewed by Robert:
I like this oil and have been using it in my motorcycle for 3 years running. It works in my engine,primary and transmission.
Reviewed by David:
I used this in my BMW motorcycle and have to say, it is a very good oil from what I can tell. 4K miles since the oil change and it still shifts smoothly. That has never happened before I used 20W-50. Overall, the bike runs very well on this stuff. Will be buying it again
Reviewed by James:
Used this for years great product
Reviewed by Robert:
I have changed the Harley over and been riding it and what a big difference so far. The bike is quieter and my gas mileage has gone up a little. I will be changing the pickup over next week. Very happy so far.
Reviewed by Mike:
The temp dipstick indicated a 20 to 30 degree drop in temperature as soon as the first oil change was made. In any air cooled cycle engine high temps are a concern, so AMSOIL 20W-50 is definitely the best product I have found for our Tri-Glide!
Re: 20W50 motorcycle oil
Mike, thank you for sharing how the use of AMSOIL 20W-50 synthetic motorcycle oil reduces engine and oil operating temperatures.
AMSOIL has posted this YouTube video that shows how well AMSOIL 20W-50 synthetic motorcycle oil performs in high temperature situations. Copy this link and paste it in your browser address bar.
https://www.youtube.com/watch?v=XSnKTpGt1k0&list=UUhdADKjKESNcnzjZc2JGQww Replied by Tech Admin
Reviewed by Steve Morrison:
With HD synthetic oil, engine gets really hot in stop and go traffic. As the heat increases engine gets louder also. I am now running Amsoil 20w50 motorcycle oil because friends recommended it.
This oil changed the way engine behaves (cold or hot). The bike idled so much more quieter immediately after installing Amsoil! There's no more
overheating issues. Engine is quiet and smooth even in stop and go traffic during hot days.
I am running this oil in all the three holes as recommended by Amsoil. Gears are shifting great. I wish that I got this oil when the bike was new, which would have saved lots of engine wear. All my toys will get Amsoil!
Canada
United States
I'm a believer
I use Amsoil in all my motorcycles. 20W50 in engine, Primary fluid and Transmission oil. From all evidence I have, this is the top synthetic oil on the market today. I want nothing but the best for my bikes and in my opinion this is it.