I like the KB 1L, KB HP, McCoy #9 and Enya #3. But overall my primary is the OS #8 even though I pay 5 bucks apiece for them (on discount mail order). Too often they have fixed problems that seemingly have nothing to do or should have nothing to do with glow plugs. That's enough for me. I simple don't tear things apart until I've first tried an OS #8.

Denis