Customer Ratings & Reviews

This review is mostly based on the same product but a different weight for a different car. The other car was Signature SAE 0W-30. Signature Synthetic worked very well for the other car and I"m sure it will for this new car as well. With the Amsoil Signature the oil consumption was reduced by much more than 50%. I had no problems with the spirited turbo 4 cylinder in the previous car. I have to believe some of that is because of the Amsoil oil vs ordinary oil.

The best stuff manufactured for best longevity results. El mejor aceite

Using 7 quarts of Amsoil signature series in my explorer st gives me a piece of mind that my vehicle is being well taken care of externally and internally thanks to this awesome product from Amsoil also added some trans fluid to my vehicle a while back that smoothed out some trans stutter.

Great product. Car feels much better, I can tell the difference.

I have been using this product on 2 hyundai elantras and 1 jeep since new. Change filter and top off oil at 5000 miles and change oil and filter at 10000 miles. Jeep has 105k, 1 elanta has 65k and the 45k all are fine.

You can tell there is less drag on motor when starting. It starts much easier.ive also noticed it does coat engine with a lasting film because I've gone up 1 mile per gallon after 15.00 miles of use. I can only attribute that to less metal on metal contact in engine. Love the oil and recommend for anyone

AMSoil products are second to none. We use in all our vehicles, one with over 200k, no issues at all. Honda/Toyota love it.

First time using Amsoil. Should have switched sooner. Have a Ram 1500 with the 3.6 and 88k miles. Runs great. The Signature Series oil has increased oil pressure by 5, decreased oil temperature by 6 and it runs even quieter than before. I did the Amsoil flush also. Can't wait for the next oil change to see the condition of the oil and filter.

Best

The best oil on the market. Been using for 100k miles now and zero problems. My truck runs better after every oil change.

I’ve noticed cold starts are a significantly quieter on cold mornings whereas with other engine oils I would notice a little bit of valve train noise and overall just a smoother running engine with AMSOIL. 2010 ford crown Vic 162K miles.

This oil viscosity has proven to give me the best oil pressure on my 418 CID aluminum LS3 engine. Love it!

I have been using Amsoil products since 1980. All my vehicles have benefited from the excellent lubrication properties Amsoil oil products provide.

I have been using Amsoil products since 1980. All my vehicles have benefited from the excellent lubrication properties Amsoil oil products provide.

Good product

Best of the Best oil.

I have an 08 grand marquis and was a regular user of royal purple. A mechanic suggested that this oil was superior to even that product and he was correct. Longest lasting between changes, and the rattling on cold start of that these motors are famous for has been completelty elimated with the superior lubrication, also a slight overall milage increase, slightly less than a mile a gallon, but it was immediately noticable after the first tank. The only thing I can say that was a little worse than royal purple is slightly higher evapoative loss or consumption., only a cup or so more between changes. Clearly worth the money and one of the best things you can do for you money without rebuilding it.

Really enjoying the quality

I have been using Amsoil motor oil in my vehicles for more than 20 years. My current vehicles, one a 2004 model and the other a 2005, each have over 160,000 miles on them. I have used Amzoil Synthetic 5W-20 wt engine oil in my vehicles since they were purchased back in 2005. The engine performance has not degraded over the years, and is about as good today as when they were purchased. I recommend this motor oil.

I've ran high end oils, in a lot of different vehicles. Like this one a ton more.