Customer Ratings & Reviews

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Is this product and love the 25,000 mile oil change!

In my honest opinion, I love this oil. My honda 2008 civic is at 277000 miles and i owe alot to the fact that amsoil has thw best product in the market. I usually change my oil around 25k miles. One time, I was 35000 miles on an oil change! My car still has the pep it did when I bought the car. I switched from a competition product to amsoil about 10000 miles from being new. I highly recommend this oil.

I drive a lifted 2005 Ram mainly used for towing an enclosed race car trailer and noticed an increase in engine performance, and a MPG increase.

I never would have thought that using a premium oil would improve MPG, but it has. I am getting 5% to 10% increase.

After reviewing oils including Royal Purple, Mobile 1 etc I found Amsoil to be top notch. I would not use anything else in my vehicles. I also use the Amsoil oil filters which are the best. Amsoil is higher in price but quality of product and piece of mind that my engine is protected is priceless.

I run this in every car I own and have for years. less maintenance since you only have to change it once a year is worth a little extra cost to me started putting it in my 5.4 triton truck when I got it used with like 160k on it. it smokes like heck but still going at over 300,000 miles!! that is really saying something about this oil and it burns less of amsoil than other synthetics.

Have been using Signature Series oil for years in all my vehicles, past and present. Long life and excellent protection. 2008 G8 GT 6.0L used Signature Series since day one, 120K later, engine still like new.

THE PRODUCT IS EXCELLENT, BUT ORDERED ON TUESDAY ABOUT 10 A.M., U.P.S. TRUCK PULLED UP AT ABOUT 10 A.M. WEDNESDAY. WOW

Great, great oil all I will use in both of my vehicles

I have used signature 5w-30 as my all-around oil in everything I own. Cars , trucks, lawn mowers, snow thrower and generator. Since 1994 I've never had an oil related issue and it makes oil changes simple , just grab the Signature 5-30!

I purchased a Chevy truck with a Duramax engine and got information that Amsoil was the oil Duramax owners used so I started using Amsoil, I purchased a 2004 Honda Accord with 202,000 miles on it for a vehicle to drive to work, the former owner said that the oil was always changed on time with Honda brand oil, he said that it would use about a quart between changes, first thing I done was change the oil, put this signature series 5W-20 synthetic in it also used the amsoil filter, 3000 miles it used about a quart, changed the oil at 3000 miles, went 5000 miles on the second change didn't have to add any oil to it, may have used a half a quart, changed it at 5000 miles, hoping it won't use any after this next 5000 miles, to me this signature series has to be doing a good job to make a 210,000 mile car go 5000 miles between oil changes with no oil consumption.

I use Amsoil signature series engine oil in my Ford Expedition. I have had an independent oil test done after 25,000 miles and it showed the oil to still be ok. It may be one expensive oil change but considering how much longer you can run the oil vs. changing it every 3000 miles this is a lot cheaper and a lot less Saturday afternoons wasted changing oil. Thanks Amsoil for a great product.

I trust Amsoil products to be the best, so I'll comment on the warehouse facility. I picked up my order at the warehouse because I like looking at the displays and chatting with the knowledgeable personnel.

THIS IS ONLY COMMON SENSE. IF YOU KEEP ONLY THE BEST LUBRICANTS IN YOUR EQUIPMENT IT WILL GIVE YOU ITS' BEST PERFORMANCE. AS THE COST OF MODERN VEHICLES IS SO PROHIBITIVE IT MAKES GOOD SENSE TO USE THE BEST. MY VEHICLES FROM MY 1978 THROUGH MY 2008 ALL PREFORM BETTER WITH AMSOIL.

I my truck, cars all the time since 1999

So far, so good. Oil levels have been maintained with the usual discoloration. I'm waiting for my next oil change in order to perform an oil analysis. Then I shall know the truth of Amsoil's claims for myself. But, for the time being, I am impressed.

It is expensive, but to only worry about changing oil and filter every 25k miles is worth it in convenience. We have a Mustang with 170k miles, a Ford 500 with 130K miles, and an F-250 with 98k miles. The only problem with the pickup is that it uses a quart and a half between oil changes, so that increases the cost.

I have been using Amsoil signature series 5w-30 synthetic oil about 3 years and am very happy with it. I change my oil just once a year now compared to 2-3 times in the past. My engine runs great and in the long run it costs me less, no engine repairs or tune-ups other than normal maintenance. This is great considering I tow a 20 ft boat and put on at least a thousand miles a year just towing. I am very happy with this product and highly recommend it.

Bought a 2013 Tacoma brand new. First thing I did was drain the fluids and replaced everything with amsoil product. Dealer techs thought I was crazy because they offer 2 years free oil changes, I think they are crazy for try to put another oil in my pickup. Love this stuff and only need to change once a year.