A well tuned 292 should get good gas mileage. I always ran a straight-thru muffler on it.
By the way, what is the GVW on your C-60?
This girl is the 19,500 lb gvw. She's pretty heavy and rides like a tank as is.
I'm hacking off the muffler tomorrow and just running a straighpipe in its place for now. Ran out of time for that yesterday. What's your definition of a good tune?
Also, could a heavier weight oil prevent the consumption. Given the cold weather out ive got 10w30 in the motor as per factory manual. Maybe a 40 weight would be better and less prone to burning off?
