Two of the glow plugs on the 91 have been in there about 55k miles...the other three are more recent. One of the old plugs is bad, the other still works. I will replace both at the same time when I take it in....but I want to wait till it needs other work done. Everything else in perfect shape right now!

If that other plug goes out, think I could make through a New England winter on three plugs?

For what it's worth, I'm confident compression is good.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife