Forum Discussion
Octaneforce
Jun 02, 2019Explorer
My 93 30ft p30 with a tbi 454 chugs right along and achieves 8mpg at 70-75mph. Going slower doesnt seem to help much. I wont go anywhere without adding lucas upper cylinder lubricant to the fuel. I honestly get an extra 1/2 mpg since i started doing that. I also removed the cat. I previously couldnt get more than 7.5 mpg.
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