Well I am glad across this post. I have seen plugs just like that too. I have used Bosch Platinum'* before in other vehicles but they will not run in either my 96 Corsica or my 93F150. Both vehicles just chewed through the plugs. The Corsica 3100SFI V6, I tried the Platinum, then the Platinum4 and it ate through them in less than 15k miles. Tried the A/C Delco DoubleTipped Platinums next in the Cosica and have been in there for at least 80k miles now and still run great. I really look forward to changing them on my Corsica agiain, especially the back 3
The Ford I just use the stock copper plug and life is great except it chews through distributor caps about every 25k miles. Haven't figured out why but the spark looks like it chews away parts of the posts inside. There are splash marks of post material around the edge of the cap. It made mincemeat of Bosch at 10k miles
Would be nice if I could match up a Double Tipped Platinum'* for my 87 Bonneville and my F150. I can't find a listing for either anywhere I go.