Fuel additive experiments....

[cheapybob]

My current tank I added

3 oz acetone
1 oz gp-7
2 oz fuel system cleaner

Mixed it with 2 gal gas, then added the 2 gal to the tank and bounced the car.

Anyway, I did a 60 mph test run and saw no improvement in scangage mpg. I did notice my spark is advanced to 39 max instead of 37 or 38, so I might be doing a bit better as a result.

[ZugyNA]

Just for kicks...try this mix?

1 quart xylene or xylol (octane boost)
6 oz Amsoil PI (cleaning, UCL)
1 oz Amsoil Gas Fuel Stabilizer
1/2 oz 100:1 2-cycle oil (UCL)

Mix in one gallon metal gas can. Pour in 1/2 full tank, and bounce car. My turbo with K-jet returns unused fuel to the tank so it mixes well.

See what your timing does?

Or try a tank of premium?

[cheapybob]

Originally Posted by ZugyNA

Just for kicks...try this mix?

1 quart xylene or xylol (octane boost)
6 oz Amsoil PI (cleaning, UCL)
1 oz Amsoil Gas Fuel Stabilizer
1/2 oz 100:1 2-cycle oil (UCL)

Mix in one gallon metal gas can. Pour in 1/2 full tank, and bounce car. My turbo with K-jet returns unused fuel to the tank so it mixes well.

See what your timing does?

Or try a tank of premium?

A quart of xylene alone would cost $5.00, let alone the other stuff, so I can't imagine that it would be possible to get a sufficient fuel economy increase to pay for that. My car is about 9.5 to 1 compression and designed to run on 87. My intake air is getting too hot, and that's when it was retarding. At some point here I'll cobble up some method to limit the temperature to 180 or 190f.

[ZugyNA]

Make a spacer to pull the intake back from the exhaust some?

[GasSavers_maxc]

Originally Posted by cheapybob

A quart of xylene alone would cost $5.00, let alone the other stuff, so I can't imagine that it would be possible to get a sufficient fuel economy increase to pay for that. My car is about 9.5 to 1 compression and designed to run on 87. My intake air is getting too hot, and that's when it was retarding. At some point here I'll cobble up some method to limit the temperature to 180 or 190f.

Run the intake air past a seperate heater core too keep it 190F?