Originally posted by PA 3L SVT:
Any luck finding a double plat one step colder than Motorcraft AWSF22?
AWSF22FS is the colder plug apparently. As Demon
Quoted the AWSF32P is the hotter plug! I haven't checked on anything colder than AWSF22FS for Autolite, but why choose Platinum, unless money is an issue, over Iridium. Denso has a colder plug than the cross match in Iridium of AWSF22FS, Denso's PN# IT20. Desno IT16 is the same heat range as the AWSF22FS. Denso is the leader in Iridium Technology, nobody comes close. NGK doesn't fully support there Iridium program and so a small selection in heat ranges plus there electrode is .7mm compare to Denso's .4mm, those 3mm reduction by Denso is such a huge advancement, not even NGK's technology allows them to go smaller than .7mm. Understand the smaller the Electrode the Bigger the spark , I won't get into details but these are many of the things I've been learning about spark plugs. Since I have a set of Denso Iridium Plugs coming in, I will be the first to vouch for them!!!
As a side note, NGK outsells Denso 100 to 1 on the regular spark plugs. Denso's obvious efforts are focused towards Iridium, VERY SMART!!! Denso also sells a RACE Plug that'll tickle the Pocket at about $130 per plug....WOW!!!
