Customer Ratings & Reviews

I have used Amsoil Signature since my vehicles were new. 2 of them have over 200,000 miles and the 3rd has over a 100,000. I have shortened drain ontervals to 12,000 miles and leak no oil in-between changes.

Use it in my 2010 Prius, once a year oil change.

I run the 5W-30 in my Tacoma, my wifes Legacy and our sons 4Runner. I also run all Amsoil oils in our 2 Harley Davidson motorcycles.

People tell me they don't use amsoil because of the high cost. But if you change the oil at 30, 000 mile intervals like I do, it actually costs LESS than paying for an oil and filter change every 5, 000 miles. And changing the micron filters every 10 to 15 thousand miles is very easy to do, plus you are getting a much better product using a full synthetic oil and your car's engine will last a lot longer. That's why all Nascar drivers only use a full synthetic oil. That's why jet airplanes only use a full synthetic oil. The protection, even at extreme temperatures is unparalleled. I had a real estate client who operated a fleet of 18 wheelers. He was so cheap he would change the oil at 100, 000 intervals, but he would change filters and do oil analysis along the way. But, my point is if he could operate all those trucks on a 100, 000 mile oil change schedule, it's really no problem for a passenger car to change oil at 30, 000 mile intervals because unlike regular oil a synthetic does not break down. The key is to do the micron filter changes on schedule, which usually require you add ftom a half quart to a full quart of oil at that time.

Use in my 2015 Yukon SLT-This is used primarily as my field service vehicle. I cover the Bay & Reno area & to date have 42,000 miles on my SUV. I frequently haul loads from a 1000 pounds & tow up to 3000 on occasion. I find it very hard to trust Oil Change facilities & the dealer takes all day so I change the oil myself knowing that I am using the best oil money can buy because I have tried the rest & Amsoil is the best.

I used this oil in my wife's 2010 flèx and we just turned it in with 150k miles on it and the car engine was running like it was brand new. It cost a bit more but well worth it. In fact we just bought a new 2016 flèx and this is the only oil I will use. I bought enough to change the oil until she reaches 100k. I also use their diesel oil for my 2006 Ford F-350 diesel.

I have been using Amsoil since 1975 and love it. I have never had an oil related problem and have had mechanics comment - your engine is so clean, how did you do it. I do not exceed 12 to 15,000 miles a year on my vehicles so I change oil once a year, use Amsoil filters, change filters at 6 months - just me. I am a preferred customer and plan on using Amsoil forever.

I've tried other oils, this by far is the best. Less consumption noticed, stays cleaner longer. There is a difference, I've tried them all, in motorcycles and trucks, this is by far the best in my opinion!

I have used this oil in my Subaru for a number of years. every oil analysis comes back exactly as I'd expect, and I'm getting nothing but great performance from the oil. per mile cost is never worse than the typical synthetic competitors and I prefer the conservative margin of error this oil affords me...

For all my cars

I have always used high quality synthetic oils in all of my cars (daily drivers) because I believe it pays off in reduced engine wear. The Amsoil Signature Series is on par, if not a notch above the other oils I have used in terms of performance. What sets this apart from the competitors is the extended drain interval. Since my car is turbocharged, I follow the heavy duty recommendations (15k) with a filter change per Chevy's instructions (7.5k). This saves me time (cartridge filter takes 2 minutes) and money versus an oil with a standard drain interval. It would save even more in a vehicle that can follow the 25k drain. Even at the end of the 15k, I don't notice any decrease in performance, but I change it anyway.

My latest use of Synthetic Series OW-20,in a 2016 Hybrid Ford Fusion. Smooth performance, and adding more miles per gallon. WONDERFUL!

So far I have good results and I am extending drain intervals top 10k miles even after towing 7500 pounds most of the engines life.

I did not really believe all the claims about AMSOIL until I checked for myself. I used it, had oil analysis done and was amazed at the results. I have been a user for 12 years in 4 vehicles and have no worries when it comes to lubrication of the engines internal parts.

I actually recommended to my friend so its for him and he's been using it for years. I have been using AMSOIL products for over 38 years. I have used almost every product AMSOIL makes.

I use Amsoil in the car, my motorcycle, and in any other engine I may possess. I am not brand loyal except when I find a product that is so superior that no comparison exists.

I have used Amsoil for years in several different vehicles and have found the product to be superior to the other products that are found in stores. I have had comments about how well my vehicles have run while using your product.

Not much to say, really. I'm pretty sure the main ingredient is awesome sauce, though. I won't put anything else in any of my ICE-powered vehicles. If Amsoil could make electrons, you know e-cars would go faster.

Best oil ever.

I've tried them all, and I was never happy entirely with the other oils. Some burned, some lost viscosity way too fast and some looked straight black just after a few thousand miles. That being said so far I'm loving Amsoil, doesn't burn, always looks clean at changes and holds viscosity. So far, signature series has been my favorite oil for my 2004 Evo 8. +1 to Amsoil I feel like I can trust it when I tracking the car or driving it around the streets.