Customer Ratings & Reviews

Highly recommend for added performance, and additional gas mpg was very satisfied with this product and continue to use. Currently use in GMC Yukon over every few tanks of fuel, especially on long trips pulling boat & trailer.

I use the PI in my Jeep Wrangler's fuel once every 4000 miles. At 50K miles I'm still getting about 16-17 MPG in town and 21-23 MPG on the highway. Who can argue with success

Improved gasmilage

AMSOIL provides great product value and customer service.

Well worth investment helped with due mileage even at only 20,000 miles. Helps with carbon monoxide excess with newer motors running variable cylinder management.

I use this product every 4,000 miles and my car gives me excellent gas mileage.

Makes a difference in 2012 Jeep. Engine runs more smoothly and adds 5-7% improvement in mpg.

it does what it says it going to do

1

Use it in my 2004 chevy truck and 2014 Chevy Malibu. Works great!!

Just started using seen to start better

Helps keep my vehicles in peak condition.

Having a modern car, I need all of the help I can get. Keeping the performance and fuel mileage going is important to me so using this performance improver is a no-brainer.

This stuff works noticed a difference on the first take of gas with mileage and performance

I used this product on my 2015 Mazda 3 and 2017 Honda Civic Touring 1.5t and did not notice anything different, no improvement in idling, performance or mpg. I've always been using top tier gas on all my cars so that might be the reason why I'm not noticing any improvements.

Use it in my tuned 2018 540i 450+HP 500+ tq. I run higher octane fuel 90% of the time, or an ethanol blend so every couple of tanks I run normal 93 octane and a bottle of this and the Upper cylinder lubricant. Keeps things running smoothly and clean. I use all Amsoil fluid in all my vehicles (engine oil, transmission fluid, diff fluid) and have never had issues or experienced any abnormal wear.

Car runs smoother- good insurance for the fuel system

This works very good in my Optima with GDI. The best I have ever used and the price is really good for what it does.

Used it on a used 2007 Honda Accord V6. It helped bring the engine run smoother. Used with Amsoil motor oil, flush and filter.

This has boosted my fuel efficiency in may cars and keeps my away form the gas pump.