NM 51 and Cabover - I found the anti foulers at AutoZone (the brand they carry calls them "non foulers," but they are obviously the same thing you're talking about). The package says you are suppose to use them on "half the number of cylinders in your engine" and that you should use them with the "original or lower heat range plug." Q; Do you think the R-45s plugs are too hot for the anti foulers, and what plug size did the 54 235 truck engine use originally? Q: Why would you use them on only three cylinders and not all six? Thanks.
