Customer Ratings & Reviews

Great product to keep your engine running at it's peak performance. Used it in my 2006 Dodge Ram 2500 for 152,000 miles. Plan to use in my new Ram 2500.

The Viscosity works well in my 41 year old 500 CI Cad motor. Has enough phosphorus for my lifters. I also can use it in my mower that requires a straight 30 wt. Been using this for the last 10 years and I am very pleased with the results. Zrod would also be a good choice, but this has a higher base number...

I have experienced quite a few problems with the 6.0 Powerstroke engines and I can say that my 6.0 runs like a top after switching to this oil. As far as I am concerned this is the only oil that I will ever put back into this machine - it has made a noticeable difference, especially in cold weather. I was skeptical at first but this oil was made with the 6.0 in mind. The standard 15w-40 oils tend to get sheared down by the High Pressure Oil Pump meaning they are 15W-40 when you put it in the engine but it is not 15W-40 when it comes back out. Where the Series 3000 oil goes in at 5W-30 and comes out at 5W-30.

I BOUGHT A USED 2007 DODGE DURANGO LIMITED WITH A 4.5 L GAS ENGINE IN 2007. IT HAD 18,000 MILES ON IT AND NOW HAS 190,000 MILES. I HAVE USED THE SERIES 2000 OIL ITS ENTIRE LIFE, CHANGING EVERY 10,000 MILES. IT DOES NOT USE ANY OIL IN A 10,000 MILE INCREMENT.

I have used this product for years. I keep my vehicles for many years so important to keep wear under control. When my trucks hit 45000 miles I switch to Amsoil 3000 and have gotten longevity on all with no major engine trouble. Never had to plug my vehicles in, in cold weather. And I've had to travel upstate NY in very cold weather.

I have been using this oil for over 5 years now and I would not change for any other brand. Amsoil is easy to work with and they ship fast. Great company.

My vehicle has 245,000 miles using this product plus others and I am pleased with all of them. However, my rating of four stars is because you need to continue to produce quality products, stick to your excellent lab testing, research, upgrades and improvements, while keeping affordable prices. When you think you have accomplished all this I will change my rating to five stars.

By switching to Amsoil i have seen better gas mileage and i don't have to worry about changing my oil while on the road snowbirding . I just change once a year now and still get better lubrication on my new Ram .

Love Amsoil! Use it on my vehicle and all my equipment. #1

Truck is much quieter with full synthetic. Also starts much easier in cold weather. Using amsoil in truck for 2 years and have since been using in all my vehicles with no complaints

Years ago, I had bought a used commercial wood chipper from a gentleman in Pennsylvania. He was formerly a Navy mechanic now retired. He told me he always used Amsoil and recommended it highly to be used in the chipper. Fast forward 6 years and we are still using Amsoil in all our machinery, trucks, backhoes, tractors, lifts etc. Need I say more? Loyal Customer from New York state Ray H

I own a 2002 Ford F-250 with a 7.3 diesel with 354,000 miles on it. I have been using Amsoil diesel and marine oil for over 200,000 miles engine is running fine with very little oil consumption. Ialso have Amsoil products in the transmission and differentials. I also use Amsoil products in my 4-stroke outboard motor. I'm sold on Amsoil.

Been using it for 15 years . One of my old trucks which I sold to a friend after putting 100000 Amsoil miles on it now has over 300000 miles on it now. I used Amsoil in my race vehicles. Engine, diff ,transmission , brakes, grease...... Without ever having a failure. Great product.

I change The oil Every 10,000 miles And when I send In the oil samples They always come back good. Have not had a need to change oil come back yet. For my diesel I would not run anything else.

highly recommended

great product outlasts and out performs any oil i have ever used,i am a full-time rv er i pull a 5th wheel and boat from central il to the rio grande valley with a swing through eastern ky and back every year

I use this product in a 7.3 liter Powerstroke diesel engine. The formula works very well in my application - and the extended drain interval provided by oil analysis adds value to the protection.

Like product and use each year. Combined with bypass oil filter I change once a year. Oil sample sent in said oil still had lots of life left in it.

This oil addresses one of big rig o/o life's saddest complexities (break downs) with such sweet simplicity. .. Extended oil change (cat 3406E) thus cheaper even in short term (I do 45k between oil changes )do the math !! 1.9 million miles later and running strong and fast...

I recently switched my old chevy 2500hd duramax diesel to Amsoil's heavy duty diesel and marine 15w 40 synthetic diesel engine oil. I switched to Amsoil mainly because I heard in my years of being a diesel technician that amsoil has made an outstanding product. So I decided to run it in my pickup. I ran it for 1 oil change of 5,000 miles which I know is way less than the 25k they recommend but I was skeptical of a 25k mile oil change on a 250k mile farm truck. So I dropped the oil a 5k and sent in a sample and I got my results back saying that my pickup is in like new condition and that i was wasting my money changing my oil too often. They said the amsoil additives we're among the beet in any synthetic oil and my pickup was running clean with almost no soot in the oil. So I would recommend amsoil to any potential customer that just needs the nudge to try it. Don't worry because you won't regret it.