Customer Ratings & Reviews

I drive a 389 with a Cummins engine, my mpg was around 5.8 to 6 before using this fuel treatment. Now my mpg is 6.5 to 7.8 depending on the weight of the load I'm hauling. I say it works have about a month running it we will see what the future holds...

Very good products from Amsoil Extremely recommended

I use these filters in conjunction with my regular Amsoil filters in my diesel and immortal’s 2014 Subaru XV Crosstrek. Strongly recommend all these filters for extended oil change intervals.

My local dealership recently had to replace the upper oil pan gasket. When I went to pick up my vehicle, the mechanic asked what type of oil I used. He was extremely impressed by the internal cleanliness of my engine at 120,000 miles.

Good kit, easy to install, which the lines were pre-cut with compression fittings installed already. The compression fittings are manually installed into the hose ends, they are a bit difficult to get the threads started.

Great products

VERY EXPENSIVE FILTER

I have peace of mind running my diesel with the best filtration system, (in my opinion) on the market. Why settle for less.

It’s on my 33 hp Dixie Chopper. It so far has helped tremendously to have 2600 hrs. on it with no engine problems at all. Highly recommend.

Yes, I recommend this. At 5000 miles my oil still looks new and with the system it adds 2 quarts to my capacity so it helps with engine oil cooling.

Used for over 25 years in my Tow Vehicles.

Would highly recommend running this bypass filter kit on any engine especially an after treatment engine. Great product!

Great filtration and increases oil life!

I added a bypass oil filter after 3k on my truck. The mechanics at the dealer who do my warranty work have also added this product to their vehicles. It is the best addition to the engine since Mr. Otto invented the auto-motor.

I purchased this bypass system so I can have the ease of going to my local store to buy the filters. Everything seems great so far I would recommend to anyone. I will be purchasing another one for my fleet trucks

This is a excellent product. Very high quality. Works as designed. Also since there is nowhere to mount this filter system on my truck, I ordered a bracket system for my truck that I found on U Tube . I think this should have been mentioned.

Excellent!! Get NOW

Makes changing the oil 100% easier Cleans up the oil really well Wasn't too hard to install Much longer oil change intervals Thank you Amsoil!!

It’s the best decision ever made, my duramax engine runs great

Help keep my oil clean. Especially with a diesel it can get very dirty but this really helps keep the oil clean.