GM Upper Engine and FI Cleaner

**Cachels1** · 05-03-2008, 11:19 AM

I want to clean my ls1's top end by pouring in GM Cleaner upper Engine and Fuel Injector Cleaner through my PCV line into the intake. The part # on this cleaner is 88861802 and comes in a clear plastic bottle, showing a blue fluid.

The bottle is 16 oz's; so how much should I use?

Is this even the right stuff? I don't trust using Sea Foam in my intake but the Sea Foam can instructions say use 1/3 of 16 oz's.

**OnEbAdReDSS** · 05-03-2008, 12:40 PM

why don't you trust sea foam... its the same damn thing... your just buying a name brand CHEVY thing... as for the directions... same thing as sea foam because they are both the same solution..

**Cachels1** · 05-03-2008, 01:07 PM

I read that sea foam can damage seals, and just works well in carbs.

**346ci** · 05-04-2008, 05:02 PM

The GM Top Engine and Injector Cleaner is designed to be injected into the fuel rail with a fuel injection tool. I work at a dealership and we mix 4 o.z. with 1/2 gallon of gas and run it through the fuel rails into the engine. Awesome stuff, really makes a difference, I would also recommend following it up with some sort of fuel system treatment additive.