Hauskaa Joulua!! I'm half-Finn but that's the only Finn I know. Well, my dad did have some Finnish cuss phrases but I won't do them here....unless I have Chiphead's experiences when I start my new 261. (We're with you, Chiphead!!!!)

94 and 98 octane must mean you have small but high compression engines there. How do they get the octane that high? Benzene? Toluene? Tetraethyl lead? Reforming? Alcohol?

I have heard of folks putting in spacers between the head and block to lower the compression ratio where only straight-run gasoline (octane about 73) is available. Too high octane is just a waste of money. It shouldn't hurt the engine but it won't help mileage either. I use the 87 octane.

1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.