Customer Ratings & Reviews

I’ve used AMSOIL for 20+ years and this signature diesel oil is the best money can buy period.

I really like your products I use them in my pick up truck my motorcycle and my lawn mower. I wish I could just go and pick it up

Oil arrived very quickly and well packaged.

I’ve been running Amsoil in all my Diesel trucks/cars (actually all my engines)for about 10yrs. Put the dual filter bypass systems on my trucks and run everything 15-25k miles, never a problem and they run better than the day I bought them.

All I use in my diesel trucks. Have never had a problem with buying high grade oil and other maintenance items from Amsoil. I run Amsoil in everything I own.

I have switched to Amsoil in my Dodge with a Cummings diesel. I have extended oil changes to the recommended mileage to change oil per the owners manual, as I had always changed before at 5000 miles. I am getting better fuel mileage with Amsoil, and the idle seems to have increased, maybe from less friction? Better Mileage and maybe less wear, that is money in my pocket.

I just reviewed this product, but I forgot to add that this oil is holding up to my towing an RV that is at the capacity of My GMC 2500hd Sierra. Just put 7000 miles towing and did not use a drop of oil and the oil pressure remains great.

I have been using Amsoil for about 10 years. It has never failed to protect my investment. I drive a lot so it is important to not have to worry about my oil. Just added bypass to my truck.

Truck runs smoother no ticks and has easier start ups in the harsh winter up here than truck manufacturer oil when truck was brand new

I’ve been using this oil in my 5.9 Cummins for about 5 years now. It runs like a champ.

I use this oil in my 2015 duramax. The truck has a load every mile its driven. I carry around 2200 lbs in the bed worth of welding equipment, and when it comes time to go on vacation, there's another 8k on a trailer behind the truck. I'm pretty happy with how the oil stands up to this use. I occasionally take a sample when it comes time to do an oil change. Blackstone labs tell me I need to take the oil to 10k miles, due to the cleanliness and abundance of additives sill remaining. I'm hesitant to take it past 8500 miles though, due to being raised on the 3750 mile oil change interval taught by my dad!

I like using amsoil product’s

Ordered oil came in fast! I have been and will use this oil for the life of my engine hopefully it will last a lifetime

2019 FORD F250 6.7 DIESEL. BIG INVESTMENT ! TRUST THIS PRODUCT .

This is the best oil that I know of at a price I can live with. Service and communication are top notch

I’ve used ASMOIL since 2001 in all of my trucks, tractors and mowers. This is the Best Oil Period. Use it in my 2019 Super Duty without hesitation. Get cha some now and be happy for ever after.

Since I've switched my entire fleet of Vehicles and equipment to Amsoil, my waste oil has been cut in half and I get better fuel mileage to include the piece of mind of 1 year or 25,000 miles which ever comes first.

extremely impressed with this product and the company, from ordering to shipping class A service and product.

I use Amsoil in my Ram 3500 diesel and travel roughly 4000 miles a week. Amsoil will always be the only oil I use and trust. I drive in all extreme weather conditions and would recommend Amsoil to everyone.

I've been using AMS oil for 5 years in my Ram 6.7 Deisel truck and three years on all of my cars. I love the fact the oil I purchase along with filters are a yearly service or 12000 on my cars. Ever since I've been using AMS oil my vehicles sound and run better. I always recommend this oil to my friends and family. Best protection you can buy