Re: V8 spark plug fitment?

Posted by PackardV8 On 2016/8/13 17:43:48

Quote:
".... m for an engine
on a clunker that was prone to fouling."

Run a HOTTER heat range of plug!!!! That can even cure OIL fouling as long as it is not excessive to the extent of blue smoke from tail pipe.

On AC plugs the heat range is 42 thru 48. 48 an EXTREMEMLY hot plug, for something like an ice tractor used in Siberia). 42 extremely cold plug (for racing or extreme high temperature load operation 10 to 24 hours per day.

The 44 or 45 heat range is moderate and most suitable for usuuaalll, normal, customary passenger car or lite truck operation.

Other plug manufacturers, who knows. AL seems to be consistent.