I use P.I. every 3 months on our vehicles just to help keep injectors running smoothly and clean. we have had no issues so it must be helping. its a small price for some added protection that can't hurt.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Quality
By 
TIMOTHY, 
a 
Verified Buyer 
on 
February 06, 2026
Great product
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Key additive in the maintenance regimen for my truck
Product really works. Purchase a 2020 chevy silverado 2 month ago very low miles runs good added the p.i. and I see the difference right away love it really works
I’m cautious about snake oil in a bottle. However, I’m very impressed with this. Started using it in Allis-Chalmers Antique Tractor, we pull with . Out of the hole, the engine is snappier . And in the light class, I’m able to pull a gear higher. Rarely power out. Just started using it in my ‘18 CT6 Cadillac. These are noted for a problematic 8 speed automatic. Not sure how it’s related, but it’s shifting smoother between gears. Not sure on the MPG improvement yet?
By 
RAYMOND, 
a 
Verified Buyer 
from 
Cape May NJ 
on 
February 04, 2026
I have been using PI for a long time. We have three vehicles that I maintain. I believe it makes a real difference. I recommend PI.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great product but beware!
By 
Ron, 
a 
Verified Buyer 
on 
January 28, 2026
Beware of shady business practices. The product is great but I felt scammed by the business. I ordered a 2 pack and paid $34.88 (about $17 bottle). I later receive and invoice for $20.00 more. When asked, a rep said $20 was for shipping. My total for 2 bottles becomes $54.88. I know pairs about $27 per bottle. Who would pay that much? I felt like they charged me the normal price and after I received the product they sneak in an extra bill. Use caution because I don’t know if they add another charge to your order way after the fact. If they were upfront about the total cost I would have been able to make a better decision on my purchase. Instead, I feel scammed, ripped off, conned, etc.
Have been a Amsoil customer for years, just purchased a new Mazda CX-5 with DPI fuel system just wanted to start the car off with some preventative maintenance A++
I used a bottle of amsoil gasoline in my GMC sierra, and my wife's Buick lacrosse. Ran the tanks until almost empty. I couldn't tell a difference until I refilled the tanks. Let me tell you, all I can say is WOW! They both idled better and definitely had more power! I will be buying more! I highly recommend Amsoil gasoline treatment!
This gas treatment is the best in the market I use it 4 different vehicles see the change in more power and more gas mileage i put in my vehicles every 5000 miles
A must do treatment every 3000 miles. Contains a great PFI chemical with is the best for cleaning carbon and deposits in the fuel injectors. Best to be using top tier fuels and avoid the minimum detergent non top tiers. Additives without the pfi's are snake oil
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