Customer Ratings & Reviews

I use this for my 2025 Ram 2500 Cummins 6.7. It’s a great product for a reasonable price. I have my oil tested. I change my oil every 15,000 miles even though my test results say I can run it even longer.

I researched your product and it was advertised as highly rated and high quality oil and filter. My oil was changed with your kit and then my GM developed a typewriter noise/ticking noise. I took my truck to GM and they advised me I needed to use the OEM filter and oil due to AMSOIL doesn’t airate properly causing bubbling/popping noise in the pan. Once GM changed my oil and filter the noise is gone. I’m disappointed I purchased what I thought was high quality for it to create an issue, so now I’m out double, because my oil had to be changed again.

I have used Amsoil religiously for over 6 years, between multiple vehicles. Most of those vehicles reaching over 200k and 100k miles. This oil specifically I have used between two trucks and it has been flawless! I will forever use Amsoil in all my vehicles.

Works great

I've been using amsoil for 30 years and haven't blown up a motor in all this time. Great company. Capt.Ray

Excellent product. Fast shipping.

I’ve been satisfied with the results of your product the only problem was the last order I ordered from you I only received partial order it was a gallon short i hope this is not a reoccurring issue with future orders.

Put in my metric bike. Engine is running better than ever. Highly recommend!

I order the oil and it shows up on my doorstep. So easy!

This is what my employer used on this truck before I bought it from him and all the oil sample analysis show that this oil is true to its worth as there haven’t been any signs of any foreign debris or contamination while using this product. I plan on using it too from now on even in my gas engine vehicles

I used this oil in everything in my own personal gasoline fleet and have been using it in customers in place of todays car oils I use it in every gasoline car that recomends a 0w20 5w20 5w30 10w30 as the passenger car oils have had enormous amounts of zinc removed and as you see engine failures abound this is the fix for that it runs good in most everything I use it and 15W40 signature series in almost everything that runs

I average no oil change at least once every month to a month and a half to get it done. Anywhere else is outrageously costly the amount of mileage I put on my vehicle in a year requires a kind of protection this product provides. So if you're currently not using this product, I recommend you do your research and protect your vehicle with the best options available.

Run signature diesel 5w40 or 15w40 in everything we own from the grasshopper to tractors pickups and medium duty all on extended drains and some with amsoil bypass systems. Theres nothing out there that will run cleaner better or longer.

My opinion is that Amsoil Diesel Oil is the beston the market. This oil has proven to provide great operational results and protection for my truck engine.

10/10

This works great in late model diesel trucks it also runs great in everything gasoline powered that I have and I use it in all my customers cars in place of 5W20 and other insufficient oils

I’ve used this oil for the past 3 Oil changes in my 07 Classic Chevy Duramax and have been very satisfied.

I love amsoil oil products my truck runs smoother and quieter and the diesel additives i use all the time also better mileage performance and runs very cleans

I recently made the switch to AMSOIL after running Shell T6 5W40 for many years in my 6.7 Powerstroke due to the low cost and availability. Immediately after changing the oil my truck developed the type writer tick you always hear from 6.7 owners. In my opinion any tick is not good whether it clears up or not. I’m switching back to Shell T6 as it seems to be a better option cost and availability wise and my oil analysis shows that it keeps my engine running excellent with hardly any wear and no loud tick after changing. Not saying amsoil is a bad oil but in my experience I did not have great results. Customer service is top tier though they are willing to test my oil and see what exactly what could possibly be the issue.

Does what product is supposed to do