Customer Ratings & Reviews

I purchase PI, every oil change. I feel that my 2010 Tahoe dose benefit from this fluid as it's high in mileage and the environment here is harsh for any vehicles. I really don't see any fuel mileage increase, but it's the engine is running smoother in the cold mornings. It's a nice treat for the "Tank".

I used this in one of my older high mileage cars and it seemed to really do what it was intended. I will use this again and probably even in the newer ones.

Been using for years. Keeps moisture out and clean injectors

Great product

Seem work good additive pi performance gasoline additive with 93 fuel noticed much more effective clean more deep work as great

I use this product every time that I change the oil on my vehicles. I drive about 1000 miles per week so I change my oil frequently. It does what it says that it does. i wish it were already added to the gas at the pumps. My vehicles run as smooth as silk.

I just completed my second try of P.I. I didn't notice any change during or after my first tank and waited for another oil change before trying it again. On the second use I did notice a change in mileage and the engine did seem to run smoother. I will continue to use as directed.

Used this product many times at every oil change all but good results.

I use PI gas sedative in all 3 of my vehicles plus lawn mower and snow blower helps keep carbon down.

Best product ever thanks

I have been using amsoil now for about 8 months in my cars and motorcycles and I love it works very very well and it is a high quality product

I use P.i. in my daily driver every few months. It makes my engine run smooth and it feels peppier! My only complaint is it's a little pricey. I'm hooked though, Customer for life!

I have used the P.I.Performance in several cars and trucks of all ages. P.I. will help keep the fuel system clean and increase Horse Power and Mileage I have recommended this product to friends and relatives and they have all agreed its a great product and will continue to use it..

I have using Amsoil since 1979 in all my vehicles. I had a 1981 Toyota 4X4 SR5 that I used Amsoil from day one. I had to rebuild the tranny at 30K & 60K miles (no fault of Amsoil-Toyota used a Celica tranny that was very underrated for the 4X4). When I removed the parts the syncos and gears looked like new. The main problem was the input bearing was to small and chewed itself up at 30K and 60K miles. Never bought another Toyota since they would not honor their 30K warranty.

Great product and gives your vehicle a clean out and a mileage boost.

Put this in all of my cars and they got better gas millage.i recommend this product to all of my friends

I used this on a company car that only drove short distances around the work site (Orlando Airport). I used this product on my personal car and liked the results so I used it in this company car and WOW!!! The results were phenomenal. No more rough starts. No acceleration lag. It was like a totally new car.

I use this product every other month and it keeps all my vehicles running great.

Excellent

I put Amsoil in everything I own. I found that my vehicles and equipment last longer and perform better. My vehicles gfet better MPG, and handle all kinds of wear and tear.