On 23 Nov 2009 at 21:21, Geo Hahn wrote: > Oops, I meant UT -7 hours of course. While Jonmac is most certainly at UT+0. So, tell me, what kind of ZDDP is best to use with Pertronix? Is it compatible with DOT5? -- Jim Muller jimmuller at rcn.com '80 Spitfire, '70 GT6+