Customer Ratings & Reviews

This oil stands up excellent in my vehicle, the level never drops and even the colour of it doesnt change much between oil changes, never black when it comes out! Fantastic oil!

Use it in my 09 chevy z71 4x4 since new Use in my wife's car.

I've been using this oil for 3 years now. My 2007 F150 has 135000 on it now. I like only having to change my oil once a year.

I drive a 05 ram with the Hemi. It holds 7 qts and oil changes were getting expensive. I noticed no matter the brand i would use at least 1-2 qts between oil changes which was around 3000 to 4500 miles. Since swapping to the signature series i went for an initial interval of 15000 miles. I noticed i would only use 1 qt every 5000 miles. I also noticed the truck doesn't tick and i haven't? noticed a significant change in fuel economy. But i will be buying again this time attempting 25000 miles.

I have been using Signature Series 10W-30 Synthetic Motor Oil in my vehicles since 1998. I still use it in my 1997 Dodge Dakota pickup, which now has just under 120,000 miles on it and it still doesn't use any oil, even though I only change oil every 15,000 miles, and only change the filter every 7,500 miles. I was using this same oil in my 1998 Dodge Intrepid sedan until we were involved in an accident with it in 2012, at which time the vehicle was declared a total loss (with just over 214,000 miles on it, and it still wasn't using any oil, even though I only changed oil on it every 20,000 miles, and only changed the filter every 10,000 miles. Up until the time the car was declared a total loss, the engine had never been worked on for anything other than changing the spark plugs every 100,000 miles. We would still be driving it if it hadn't been for the accident that made it a total loss.

I only use Amsoil in all my vehicles. Amsoil extends my oil change intervals and improves my engine performance. I'm well pleased with how this oil performs against conventional oil that I used in the past.

Car runs strong and smooth

Been using this oil for 12 years.

I put 100 miles a day on my daily driver. I purchased it with 40,000 miles on the odometer now it has 84,000 miles on it. 4 qts go in, 4 qts come out.

I love all Amsoil products very satisfied a longer duration before changing oil ever 6 to 7 thousand better than every 3000, with conventional oil.

Eliminates rough idle and extended change intervals beyond what a typical customer expects. I get great feedback from my customer base and it saves them money while protecting their engines with premium product.

Use it in all 3 of my Dodge vehicles. Outstanding value.

From my work vehicles to my play vehicles I use Amsoil in them all for peace of mind

How can we spend so much for our vehicles and not want to take the best care of them we can? I've used AMSOIL's lubricants in every vehicle I've owned for many years, and have always felt I was taking the best care of them I could. The 5w20 Signature Series I use in my 2013 Dodge Durango has given me so much peace of mind. Why would I want to use anything else?

I use it in my 392 hemi and love how it keeps the hemi smooth as butter

Use it on my 1995 Chevrolet Camaro z28

I only use Amsoil in everything i own .

Have 303,327 miles on the 03 honda civic,and still get 38 MPG.No smoke out the tailpipe,and still change the oil at 25,000 miles.Signature Series oil works for me ,the proof is the civic,not snake oil.

Really like it!

your car was expensive don't scrimp on the oil amsoil oil and filters