Finish the break in on the 20% and OS (?) glow plug, you mine as well use them up. I'd then switch to the Novarossi C6TGC plug and VP 30%, tune it in and let it rip. The 7.5 insert should work fine, many use 7mm...others use 8mm, so you're right there.

Best of luck!


yeah the plug package just said os P3 ultra hot or thats all i remember anyway.

and thanks i only have about half a gallon of 20% left so i was hoping and even leaning to finish it off then switch. i can order the nova C6tgc plugs and switch over all at once.

thanks and have a good day