I accidently filled my truck with about 3/4 gallon of 87 octane today.
Will this in any way hurt my Cummins?

Thanks, CS

 

I wouldn't be worried about that small of an amount.

Figure it will be diluted by another 33+ gallons of diesel.

If it makes you feel better, you could always run a bottle of your favorite additive.

Powerservice, Howes, Lucas, etc.


phox

On edit: I hope you didn't mean 3/4 of a tank.

 

3/4 gallon- if you fill the rest with diesel,not much to worry about.

 

I did fill it the rest of the way with diesel, and it has so far run just fine.
I do however know someone that filled their PSD with several gallons of gas, and then drove it home!!!
They say that it was blowing a blinding cloud of white smoke all the way (could be normal for a PSD )
Drained the tank, filled it with #2 and it has run without a problem since.

 

I wouldn't give it a second thought.