Customer Ratings & Reviews

I just bought a 2019 Honda Ridgeline with 67000 miles. I did the transmission within a week to discover that it hadn't been done yet. I have a thousand miles on it now, and I'm going to change it again when there is a dry weekend to rotate the older oil out further. I look forward to this truck lasting as long as I will ever need it. Shifting is smoother, and Shifting RPMs have dropped. Amsoil is awesome as ever!

I have used Amsoil for over ten (10) years and I love it! My cars and truck run and look like new!!

My first time using Amsoil , I did a lot or research before buying the oil Amsoil test from a independence lab Amsoil won hands down , Amsoil will pay for itself & give great protection to your engine !

I've not found a better product flat out! If you are a DIY person you will easily be able to tell the difference just by feel alone. I run this in both of my Vehicles and I've had ABSOLUTELY NO PROBLEMS, Motors are happy, they run cooler & more freely. I bought once and I'm a lifetime customer. If tests are what you like to watch on YouTube watch Project Farm and he tests this oil compared to other leading brands there is no comparison Amsoil currently is the best on the market. I'm not paid or compensated in any way for this review.

Cannot really evaluate this oil until I open up the engine cases in a year and check for sludge...

I was committed to Mobil one until I saw all the reports on AMSOIL I cannot believe after switching to AMSOIL that this is the same truck I changed all the fluids rear differential front differential gearbox transmission I’m getting close to 5 mpgs a gallon better gas mileage plus this trucks so quiet shifts better rolls better I couldn’t be happier

Started using SS 5w/50 after 2nd oil change, I prefer this over Motorcraft 5w/50. Oil analysis showed higher amounts of MOLYBDENUM and MAGNESIUM (Blackstone Labs told me that the only significant source of moly in engine oil is an additive in the oil itself. It's about as high now as it was in the last sample. Calcium and magnesium (also oil additives) are different than they were in the first three reports, too. This makes it clear that the oil you put in at 5,423 miles had a different additive package than the Amsoil SS 5W/50 you've used since then. Anyway, we wouldn't say so much about additives if the report raised any concerns. It didn't. Wear metals looked great, and so did the oil's physical properties.

Hi I am very impressed with this product it is high quality and provides superior protection. Thank you:)

I have been using this oil in all my vehicles for the last 3 or 4 years. I have pretty much everything from a sand rail, ski boat, drag racing car, classic pickup truck and two daily drivers that get lots of Miles put on. I started buying this oil with the hopes that I wouldn't have to change it very often because of the one year guarantee. I have noticed the oil is good for one year it does not get thick and clumpy and maintains it's lubricating properties but it burns off so make sure to check your oil levers throughout the year I usually check mine about 6 months in and have noticed several courts low at that point

I have used Amsoil products for the last 30+ years and have never had any major engine wear and never any failures! That speaks for itself. I also use it in cars, trucks, and all my motorcycles!

I’ve been using signature series from the mid-1990s. Never been disappointed.

My husband uses signature series so I thought it would try to my truck. Engine runs very smooth and quiet.

I have been using synthetic oil since the 1980s, and have a great deal of experience with using it. Amsoil Signature has been the best performing in several different vehicles, and the proof has been in engine tear downs and inspection of them. The condition and longevity of engines is real world proof of the development and continued engineering of Amsoil products.

EVEN THOIGH I CHANGE MY OIL EVERY 8000 KM (5000 MI), THIS IS THE ONLY OIL I USE!!! ADD THAT TO THE AMSOIL OIL FILTERS AND UPPER CYLINDER CLEANER AND YOU WILL HAVE NO PROBLEMS!!!

Check out the oil geek on youtube. Become a member w Asoil for a membership discount. New Aluminator 5.0L, VMP Tune, FHP differential and Calimer MT-82d stage 1 in my 2019 GT Mustang. Tons of other upgrades. Every 5k I change the engine oil and every 10k Trans & diff. Better than Mobil1 and most of the compentition.

I've been using AMSOIL products for a very long time. All my vehicles get the AMSOIL treatment. I use this oil in my 2016 Nissan NV350 Cargo Van and my 2019 Honda Fit RS.

Best oil! This is the only oil I use in any of our vehicles.

Oil is great I have used it for many years.

2012 Honda Accord 3.5 V6 2dr coupe. Bought as leftover in 2013. Have used this brand since 1st oil change. Other than normal required maintenance, including both timing and serpentine belts this Honda has just over 400k miles as of 03/24. Changed oil/filter every 20k. Yes I know filter is max 15k. When checking oil level there was oil always in proper level lines.My daily round trip commute was 208 miles and I retired almost 2 years ago. Always recommend this product. It worked for me!

I’ve been using Amsoil since I was young. When I bought my wife 18 Exoboost 3.5L brand new, I broke the engine on and been running Amsoil w/a WIX oil filter. The truck now has 112k on it with NO phaser issues, NO sludge build up and the performance, fuel mileage and overall characteristic of the engine is perfect. Thank you Amsoil for making a great product and keeping our drivetrains perfect!