Rep Power: 954

I tried some not to long and I have been very disappointed with the results so far. Basically the story goes like this, I top off my car with some 93 octane gas and drive to work. On the way to work my engine was reading zero on knock retard. That night I add a bottle of the above mentioned fuel system treatment and since that day my engine now has to pull it's timing back under any throttle load. Under a heavy throttle load the engine is having to pull back its timing between 4 and 8 degrees. I will never use Valvoline products again because of this shitty fuel cleaner. I'm still way over 3/4 of a tank so I might try adding some octane booster to see if that helps.

 
Rep Power: 1121

I'd like to see what some of the other brands do

 
Rep Power: 795

I've used Lucas Fuel Injector Cleaner in the LS1, I notice that the vehicle runs a lot smoother. Gas mileage got slightly better, but the engine also was more responsive.

 
Rep Power: 954

I keep forgetting to pickup the booster. I did a heavy throttle run today and the scan master recorded an 02 reading of 925 milivolts with a knock retard of 5.0. I need to go into town later so I guess I will have to break down and use one of my 104+ bottles and see if that helps. As for fuel cleaners I do agree Lucas does work good but I would never buy it because of the fact I hate the brand itself.

 
Rep Power: 1121

lucas is known snake oil on the oil side, so I have a hard time with anything they make.Once you get it going again try seafoam and see what it does, it may be the cleaner itself doesn't burn

 
Rep Power: 954

Same way I feel, Lucas has built up a name and runs on that alone. And the fact you pay over $8 bottle for the cheap stuff is just nuts.

 
Rep Power: 800

thanks for the warning

 
Rep Power: 795

Forgot to mention that octane boosters will foul your spark plugs. I pulled mine out at 20,000 miles, to see them fouled. You are really better off just doing a 100 octane mix with whatever premium fuel is, in your state.

 
Rep Power: 1121

I've never had a problem with octane boosters,I did see some ac delco plugs foul with premium more than once (the rapid fires were teh worst for it)