Customer Ratings & Reviews

This oil exceededs my expectations by far. Before using this oil I would always have a faint ticking noise in my valve train. After using this oil it is so quiet i couldnt belive it. The oil life itslefs last an incredibly amount of time as well. One of my favorite things about amsoil ut leaves behind a small film of oil after u shut down your engine. So when u start back up it still has a small flim to protect your engine intell the oil is pumped up. I use amsoil in ever one of my vehicles

Our Subaru hemorrhaged out all of it's oil on a trip (16 miles) to our Mechanic. He later called us and asked what type of oil we used. When I told him Amsoil Signature Series, he said "keep using it; you were totally out of oil !!". Using it for 20 years now. Never had an oil related failure.

I use Amsoil in all of my vehicles (4) and I believe that's why they perform and last a long time!!!

I have used this product in my 2009 Civic since it was new. Now with 195000 miles It has never been in the shop except for tires and brakes and 100000 mile spark plug change. It still runs like it did when it was new.

I've been an Amsoil PC for around 10 years now. I love Amsoil products and so do all my machines! There is no better value for your money. I have never had any engine problems in anything I have poured this liquid gold into. My wife's 2013 Toyota Rav4 loves it!

The SS 0W-20 works awesome! I just wish it were a little cheaper in price, even with the PC, it is still a little bit high in my opinion. However, it is a great 100% synthetic oil. My 2015 Silverado with the 5.3 V8 runs a lot smoother and has more power with this SS oil in my opinion.

I use Amsoil in all of my vehicles as recommended. We just handed down a 2003 Toyota Matrix with over 200,000 miles on it to our Granddaughter. This car was still of high quality even though it was used daily on dusty and dirty farm roads; as well as highway. I hope she gets another 100,000 miles or more.

Used in my 2006 Ford Mustang GT, 2013 Ford Edge SEL AWD, & 2002 Ford Ranger. I consider it the best product available.

Have used this oil on two of my trucks one has over250000 miles and still going strong. Love this oil,use it in my motorcycle too.

I use it in my car and when I change oil it still has a great consistency

Nothing but good to say about amsoil products.... they are the best!

This oil I use in our 16 Escape, to better protect it's turbo. Living in Wisconsin it can be well below zero in the winter, and what a difference Amsoil synthetic oil makes.

I run this oil in my 79 Chevy k10 and change it once a year with a fresh oil filter mid year my speedometer doesn't work so I don't have to worry about changing the oil every 3 months I am really pleased with this product

This oil works great with E85... Best I have found from the major brands.

I have been using Amsoil for at least ten (10) years, it's a life, and engine saver!

I have been using these products for more almost 30 years. I trust them.

I'm finding this oil looks cleaner and it's viscosity appears to hold up longer than Mobil 1 after the same 10k miles. I will continue to use this oil in my 2016 Mustang GT. 52k miles already and still running strong.

Works great in my wife's Buick Verano. I also use the 5-30 and 10-30 signature series in our GM pickups. My 2003 Silverado has 293,400 miles and doesn't burn a drop of oil! Bought it with 90k on it and has had all Amsoil fluids in it ever since.

I used to be very sceptical of synthetic oil so I decided to try it in my company truck(not my company). The truck ran up 200,000 miles and still running strong with minimal oil consumpsion. My wife has a growing cleaning business and I do the maintenance on the cars. Using Amsoil I went from 5,000 mile changes to 15,000 miles using the Signature Series 5W-30. She now has fifteen cars in her fleet, that cuts my oil changes from forty five to fifteen, that is a tremendous labor savings for me and it actually saves money. I use Amsoil in all my vehicles now and it keeps them running strong. I recommend to anyone that asks that they need to try it out. Great Product

I run this Signature Series 5w-30 in nearly all my vehicles. Typically I see a 10% increase in gas mileage ( over an engine ran on conventional mineral oils ) on the interstate no matter what size engine. In one recent event, I blew a head gasket on a Quad 4 engine yet drove the car for about 10 miles. Observing the chocolate milk colored oil, the engine was not damaged as it was protected by Amsoil Signature Series lubricant.