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 Morgan: 
I wouldn't use anything else in my Chieftain. Engine runs cooler and quieter.
Reviewed by Gary:
Does the job with extended mileage.
Reviewed by Willy:
I remember the days of sending samples in to determine when to change your oil. As a young man I did not understand why. That was in the 80's. Now the ease and reliability comes to your door step after years of testing and verifying performance. I have convert all vehicles from 59 Chevy to 2013 Roadglide without an issue. Thank You. Willy Veteran USN
Reviewed by Sparky:
I'm a firm believer in amsoil products. I not only use amsoil in my motorcycle but in all of my 3 cars and truck. I even use amsoil in my deisel tractor and garden tractor and trimming equipment. Haven't ever had an issue with any motors useing amsoil
Reviewed by Cunfuzed:
Run nothing but Amsoil in my road king and have used it in other bikes and on friends bikes nothing better imho
Reviewed by Neil:
Air cooled engine. S fl
Heat. Needs straight 60
Reviewed by Big G:
Everything has been great
Reviewed by MikeyL:
I have been running Amsoil products in my 2002 Fatboy motorcycle for the last two oil changes and the bike runs 10-15 deg cooler as measured on the gauge
Reviewed by 2015 Street Glide Special:
This is the only oil & fluids I put in my HD. My engine temps are cooler. My transmission shifts smoother.
Reviewed by Chuck:
I have used 20-50 Amsoil for over 17 years. 2 of the bikes have had over 90,000 miles with no oil consumption or failures,my present bike has over 30,000 on it.I use Amsoil only and will keep on keepin on.
Reviewed by WingRider:
I ride a 2008 Honda Gold Wing and Ams oil and filter is the only products I will use. I even use their final gear lube oil.
My bike runs cooler, quieter and shifts better with Ams.
Reviewed by Johnie boy:
Keeps the motorcycle running like new
Reviewed by Kenny C:
I've been using this product on all my Harley-Davidson bikes. A 2015 street glide special and 2006 Road King. I use this product when helping friends do all oil changes.
Reviewed by Sparky1775:
I first tried Amsoil in my 07 Pathfinder with 200k+ miles and it reduced engine vibration while improving my fuel mileage up to 20% on the highway. Many products claim to improve mileage but Amsoil truly does. I now use Amsoil in both of my autos and both Harley's
Reviewed by Wayne:
I have used Amsoil in my last two bikes. I always found the oil to meet or exceed my expectations consistently. I travel lots, putting on 20 to 25,000 Kms per year which is a few considering our short season. I usually run one trip to the Southern US so the temps can be hot. I never had an issue until last year. In 2017, I traveled through Nevada, parts of California and Northern Arizona in the first two weeks of June. Temps reached 45C, or about 115 F. I had installed a new motor in 2015. I was advised to use a different synthetic oil, which worked fine in cooler temps. On this trip the other oil broke down completely. My oil pressure fell and the motor became noisy. I changed to Amsoil 20-50 and had no more issues. From here on, it will be Amsoil for me. It stands up much better to extreme conditions.
Reviewed by Rick:
I just traded in my 2000 FLHTCUI with 108, 000 miles showing on the odometer. I only traded it because we are going on a trip into Canada and I have had mainly electrical problems and suspension problems in the past. It is getting too hard to find parts for her so we made the decision to find her a new home. The motor was still rock solid along with the tranny and primary but we were concerned mainly with stator and fuel injection. It had the old Magnetti Marelli injection system that was only used 99 thru 01. Amsoil 20w50 V-Twin oil kept the motor, tranny and primary chugging right along!!!!
Reviewed by Steven:
I don't use anything but Amsoil products
Reviewed by Danny:
I use this oil in my harley and I have put some 20w-50 in my lawnmower when I didn't have nothing else. It still has it in it and will stay in it the rest of the summer.
Reviewed by Croc:
Best dam synthetic oil there is
Reviewed by Jemzor:
Been buying Amsoil products for almost 10 years now. I've used it for three different bikes and have always gotten outstanding life out of their oil. Kawasaki, Yamaha, Harley Davidson. Any time I've taken them to professional mechanics for major work I can't complete on my own, they always compliment the condition of the engine because it's still running smooth.
Reviewed by Adam:
I run this oil in my Buell Ulysses
Reviewed by Carver:
I have used this in any of my Harleys over the last 8 years. The bike seems to run quieter and generates less heat. Don't use it during the break-in period, or the rings will never seat properly. Use Harley's oil (360) for the first 5000 miles, then switch over.
Reviewed by DT:
Good stuff. Would recommend to anyone. Use it in my '13 ultra classic. Change out between 5 n 7k miles. All three holes.
Reviewed by Shelby650HP:
Am using Amsoil in my third Harley, have used it since the first oil change. Absolutely no problems, ever!
Reviewed by Butch:
I have very happy with Amsoil in my Indian Vintage motorcycle
Reviewed by Car Thrasher:
Use Amsoil products in the 3 compartments - crankcase, transmission & primary.
Reviewed by Preacher:
I've used AMSOIL for seven years now. Sine using it I've never had any issues with any of my Harley's.
On a cross-country trip in 2015, at the end of a
long hot ride in New Mexico, I noticed the temperature on my bike was 120 degrees while others with temperature dip sticks was running at 140 degrees.
Less heat, less wear.
Reviewed by SLIM:
LOVE THE PRODUCT USED FOR 15+ YEARS
Reviewed by TODD:
Love it I use it in all my equipment
Reviewed by Juice:
I trust the oil after I saw the video
Reviewed by Bud:
Last year I used Yamaha lube in my royal star motorcycle first time not using Amsoil. Was not happy with the Yamaha product, the clutch on tbe bike was slipping thought about replacing it. This year I put Amsoil back in and no clutch problems. I have complete trust in Amsoil for engine longevity.
Reviewed by Speedy:
I have used this product in my engine , transmission and primary I've used it from I bought the bike brand new until I sold it at 86,000 miles never had a problem not from day one . Engine ran quiet smooth and cool great performance I would recommend this product to anyone .
Reviewed by Brent S.:
I put Amsoil in every vehicle I own. Hands down the BEST.
Reviewed by Capt Tim:
Great for my 6 year old Harley.
Reviewed by Goober:
Great product i use amzoil exclusively for all purposes in all of my vehicles and machines .
Reviewed by Bigb:
Run amsoil in all my vehicles. Love it.
Reviewed by Mike:
The best oil I have ever ran in my Harley. It runs cooler, the engine is cleaner and it has superior protection.
Reviewed by Jamie:
Ive been using amsoil for years in my bikes. As soon as I buy a new bike amsoil goes in it. Holds up to heat and the beating I put it through
Reviewed by Joe:
Run this in my 2016 Indian Springfield and it noticeably quite the engine
Reviewed by Frank:
Great products and pricing , it's all I use :)
Reviewed by Terryracing86:
Works and last better than other oils I have used
Reviewed by CC Rider:
I will only use 20/50 Amsoil in my Harley. The engine is air cooled and depends on the oil to not break down under extreme heat conditions. I also run it in the primary case to lube that area.
Reviewed by CaptDenny:
I use Amsoil exclusively in my Indian Chieftain and wouldn't use any other oil product. Period. Hot weather, cold weather and everything in between I know my engine is being protected and kept clean.
Reviewed by clarky:
big difference fo the oil from Harley . it's quite run's cooler in the motor. shifts better in the Tran's very happy with it.
Reviewed by Razztuss:
I cannot say enough good things about Amsoil, just buy/use it. It is the only oil I use in all my vehicles/equipment.
Reviewed by Leedynasty:
Might be all the hype but I truely believe the bike runs smoother and cooler. Well worth the money
Reviewed by Burt:
Use in my Harley
Reviewed by Mike:
My 2004 Fat Boy loves Amsoil. Runs smooth and clean. On second season after one oil change and the oil seems to be staying clean longer.
Reviewed by Wally:
Fantastic product, use this oil in my vintage Ducati 900ss.
Reviewed by BC:
I first tried this oil in a '16 cvo street glide stage 4 . It really help quite the lifters and run cooler.what really impressed me was the Amsoil test where they ran a sportster 1200 to 600 degrees f. Until it melted the oil drain pan. Oil test proved no metal or oil breakdown and that was enough for me.
Reviewed by Doc the bike enthusiast:
Although the manufacturer recommends synthetic blend oil for my bike, I swear by Amsoil. My engine and transmission run off the same fluids so I want no malfunctions. Amsoil keeps things running smoothly with no slippage what so ever!!
Reviewed by Wayne:
Always performs at a superior level.
Reviewed by Jim:
Best oils, best customer svc.
Reviewed by Kennyc5922:
Best motorcycle oils I have ever used. We will continue to use over and over for our Harleys
Reviewed by Ray ROdriguez:
This product is the best in the USA. The heat ratio for Harley Davidson to be controlled in the State Of Florida is very important and demanding. Well this synthetic V Twin oil 20 w 50 out does in performance and heat and engine wear. I tested just about every oil that is produce that withstands all odds. The oil I tested, was lucas, Mobile 1, Harley Davidson Oil. Well Amsoil out ranks, out performs all of them
Reviewed by Al:
Seems great. Last year I used Redline. Wanted to change this time.
Looking to compare them.
The oil, primary, and the tranny.
Will
find out soon; first long ride is Rolling Thunder over Memorial Day.
Reviewed by DWH:
I use AMSOIL in everything I own, fast service, saves money and motors last longer. Best oil out there!!
Reviewed by Gene:
My Harley love it,
This time I used the tranny oil and the final drive oil !!
It awesome !
Reviewed by Ride Like a Pro of Maryland:
Friends we teach civilian and our Military riders the skills and techniques used by our Nations Top Motor Officers. And I can tell ya it gets plenty hot in the summer heat with surface temperatures on range soaring over a 100. Our air cooled motorcycles, wet clutches and brakes don't stand a chance. That's why we never use anything but Amsoil products everywhere! They're tried, tested and proven. And that's all we recommend them to our students too! If you what to reduce operating temperatures and even thrive in the toughest conditions. You need Amsoil. :-)
Reviewed by tj:
this product went into my 2010 harley wide glide, I change oil in it once a year and I am not shy to ride it hard, every time I drop the plug the oil is clean as can be, check filters and has no wear particle that can be seen, amsoil arrests wear regardless of application. will never use any other brand other than amsoil
Reviewed by Nosocs:
Use in all; primary,crankcase, and transmission_for last 13 years, product is absOlute!
Reviewed by Peepaw:
I do a lot of full services on all make of bikes, all my customers love what amsoil does to there bikes . they really enjoy the quietness of the transmission oil when shifting.
Reviewed by Jim
Sparkie:
The Harley dealer recommends it and I started using it in 1975 and have been very pleased every time on everything I have used Amsoil.
Reviewed by Road King Lobo:
I have used the 20/50 synthetic in several of my Harley's over the years. In fact, long before it was called VTwin oil. Motor runs smooth, cooler and keeps everything humming along.
Reviewed by Grease:
Tore down my big twin for maintenance at 90k...virtually no wear on cylinders or pistons...amsoil is the only product I've used since buting the bike new...amazing antiwear capabilities
Reviewed by Batman:
I use this in a 1340 evo, 2011 flhtp and 2017 flhtk. The motors run cooler quieter. I change at 5000 mi intervals or 1 yr.
Reviewed by Eddie:
I've been using AMSoil for years and don't plan to use anything else.
Reviewed by Jeffy:
20/50 AMSOIL I have been running in my 2006 streetglide since it was new rebuilt the motor last riding season it still look new on the internal parts I have a 121000km on the bike and 10.000 km on the rebuild motor. Awesome product yes I do recommend AMSOIL to my friends 😄😎🦅
Reviewed by Bill:
As the mechanic for the local Harley Group...they depend on me to provide and or recommend great products to keep all our bikes running great...Amsoil products do just that
Reviewed by HARD KNOCK CHOPS:
I only use and trust Amsoil products when servicing my client's v-twin's
Reviewed by Rick:
I've been running this oilimmy Harley's for 15 years without any issues.
Reviewed by Old Man:
The All around performance of the engine.
Reviewed by MYHDGT:
I use this brand in both car and motorcycle.
Reviewed by JR:
The oil has lived up to its reputation and match for my motorcycle.... I have used Amsoil since my first oil change and it has performed flawlessly... I highly recommended it.... JR
Reviewed by Rolltide:
Best oil on the market
Reviewed by Richard:
year around
Reviewed by Cat Daddy:
This product is used I my Harley's. My 2006 Street Glide has 80k on it and has always had this product in all of the Case's. Still runs great, Clutch plates are original. Look forward to buying again.
Reviewed by Skullman:
Amsoil is great. Use it in all my motorcycles.
Reviewed by KV:
I have used this oil for years now and am very happy with it.
Reviewed by KV:
I have used this oil for years now and am very happy with it.
Reviewed by ahogrider:
My bike runs smoother and cooler with Amsoil also the fact that you can run the 20w-50 Synthetic V-twin in the primary and transmission six bottles a service marks it easy.
Reviewed by Marc:
Amsoil product are the best in my book. That's all I use for my HOG's
Reviewed by Roamer Russ:
I was a little hesitant before I started using Amsoil products on my Harley . Cost was the main reason until I started researching the oils . Once I finally started using the oils on my bike , I realized what I was missing out on !!! The most important benefit was how much cooler the bike was running . Right then I knew there was better lubrication than I had before . My bike starts easier and runs alot smoother . Now I only use Amsoil on all of my other mechanical equipment . ( Vehicles , compressor , Generac , lawnmowers , Lawn equipment ) Only the Best !!!!!!
Reviewed by 2014 Cummins:
My father introduced me to Amzoil over 30 years ago, it was a great product then and only gets better, I will continue to use it!!!!
Reviewed by Sammy:
If you have a Harley this oil is a must. It removes all valve train noise, reduces engine temps and Amsoil's the only oil manufacture to torture test the hell out of your bike to prove it still protects under the harvest conditions. Stop being cheap and spend the dough to make you bike last the longest.
Reviewed by Shep:
I ran this in my 1985 HD evo 1340 Electra Glide. It kept my engine running smooth, and relativly cool even in the Arizona summer heat with out extra add on. My bike was equipted with an oil cooler ant that was all.
Reviewed by NDNZ:
New Truck, replaced regular Oil with Amsoil and 3500 miles later I've noticed better Gas Milege and a smoother running Engine.
Reviewed by Jay:
I use it in my Engine, Transmission, and Primary.
Reviewed by Speedy:
Great product!
Reviewed by 2013 F-150:
Great oil I have been running from new and have 160,000 miles with no problem.
Reviewed by Hascal:
Awesome products for everything
Reviewed by Magentaman:
Amsoil has always been on the cutting edge of synthetic technology. Now they blow the competition out of the water on price as well.
Reviewed by Harley Runner:
The 20 W 50 I have been using in my Harleys for several years. My engines run cooler. They stay clean internally. Absolutely no sludge buildup even in severe cold weather riding. My trucks run 5 W 20, same thing there. Even my lawn mower has 20 W 40 in it and it runs cooler and stronger. Personally I love Amsoil.
Reviewed by CycleWrench:
I've used this 20W50 in several air cooled Engines with great results. In Evo and Twincam Harleys it can be used in the primary and tranny as well. One oil for everything, easy.
Been using it in a Yamaha Road Star last season (10'000km). No issues, hot or cold.
Highly recommend this oil
Reviewed by CycleWrench:
I've used this 20W50 in several air cooled Engines with great results. In Evo and Twincam Harleys it can be used in the primary and tranny as well. One oil for everything, easy.
Been using it in a Yamaha Road Star last season (10'000km). No issues, hot or cold.
Highly
recommend this oil
Reviewed by PAPPY'S Performance:
I run a shop and everyone who has tried it in the Harleys or be in metric and Euro bikes love it. All I use now.
Reviewed by Lee:
I am a firm believer that AmsOil products have greatly extended the usable life of all my equipment.
Reviewed by Cliff:
Use it in every thing that uses oli
Reviewed by Pokey:
Excellent product quick shipping.
Canada
United States
Noticeable improvement. MUCH better than factory synthetic o
Bike shifts better. Oil stays clean longer. No problems at all. Good stuff