motor/gas tank additives

[Scott Hall]

Originally Posted by FrankWest

how much MMO do you add at fillups? Just a dash or entire quart???

I add about 4oz to about 10 gal. of fuel.

[Bob Johnson]

On my way back from the 2014 MAFCA National in Washington my engine started to act like it was not getting enough fuel ("vapor lock"). The ambient temperature was above 100 degrees and I was going up hills. The engine temperature hit 195 degrees (it was normally 180 degrees). I opened up the GAV 2 to 3 full turns and the engine started running normal again. At the next gas stop I cooled off the carburetor and added some Mystery Oil to the gas. The engine ran fine until the next series of hills. Again it started to loose power. I opened up the GAV and was running fine again. My conclusion is that Marvelous Mystery Oil does not prevent "vapor lock" in my Model A.


Bob