Customer Ratings & Reviews

Been using this product every 5,000 miles in my daily driver for years, along with Sig. series 0-30w since new. I recently changed the sparkplugs after 50k miles and found them burning extremely clean, after running cheap 87 pump grade octane for many years! It's worth the cost in my opinion, in order to keep my vehicle running at its best as long as I can. Mainly because I can't afford to buy anything new anymore, being retired from the workforce...

I combine this with the upper cylinder stuff every other oil change it keeps things clean & lubricated

Ive tried them all, Its li no other!

Awesome product

Product works very well and as described.

This gas additive works great in everything I put it in my boats jet skis cars trucks very good stuff

I purchased item to maintain performance of fuel system and fuel mileage. Install bottle every 4 thousand miles.

I run this on all the family vehicles every 5000 kms regardless. On our ‘17 explorer sport ecoboost we were having issues with rough idle and poor mileage. Ford wanted to clean the intake ( we have a catch can ) and change plugs etc. I got 3 of these and ran them back to back on fill ups ( all highway 110kms/hr ) combined with 94 octane fuel and after the 3rd tank it was night and day difference. No more irratic idle , we never seen better than 10L/100kms mileage and now we consistently get 7.8-8.7 L/100kms on the same trips. We do run the upper cylinder on every tank and the pi every 5000 kms now. Before amsoil we tried all sorts of competitor products and nothing made any noticeable change.

I have been using PI for several years in a 2001 Chevy Astro van, 1999 Chevy Blazer, and a 2000 Pontiac Firebird, ALL of them are still running with no problems. I now have a 2009, and a 2017 Chevy Traverse. I use PI in both. I have been getting a check engine light in the 2009 Traverse (has a newly rebuilt engine), the code indicates a possible emission system issue. I have used PI during this time, and the check engine light goes out. This is NOT a permanent fix...I have an appointment with my mechanic to verify the exact cause. But up to this point, I have not had any engine performance issues.

While this is in your tank it really dampens the performance but thats just because it's cleaning so dam well cuz soon as you fill a new tank once the pi has ran its course man you can really feel the difference I am super impressed

one a year to clean the injector, the best to restore power!

Increased gas mileage car runs smoother and quieter.

I put this with every other fill up. Used for, HD, GMC Sierra and wife 2012 Honda CR V.

This product is great. I've used a lot of others and this stuff seems to revive my wife's turbocharged lezbru/subaru better and longer. I use it at oil change and halfway thru oil change mileage. Thanks, good stuff. Keep innovating and I'll keep buying.

This, along with Upper Cylinder Lube, brought my engine back to life. Snappy response to throttle, quiet, smooth idle. I'm Amsoil for life

If I'm going to put fuel system cleaner in the tank of any of my vehicles, I prefer AmsOil PI. It's just better.

The first time I used the PI was along with my first Amsoil oil change, including Amsoil filter. My acceleration was more immediate and responsive. At a red light, I had to turn off radio and look at the tach, it was idling some smooth and quiet, I thought it stalled, but it didn't. I love the complete Amsoil line up and so does my 2020 KIA Sportage.

I use every other oil change to keep everything clean. Loves this stuff.

One bottle every month at fill-up. Does it work?? 07 Grand Marquis Mercury runs like new. 184K miles with no complaints. Looking through the oil filler cap, everything looks clean as new.

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