Greetings,

If you are having any difficulty starting your diesel at 33 degrees, better plug it in nightly or find out what the problem is. The mornings here in mid missouri have been 26 degrees and one crank normal glow and off she starts. I'm looking at temps that start to drop below 10 degrees and down to zero and beyond. That's the real test of good compression and a good glow system. Personally I think anything under 10 degrees I'd plug it in for an hour just to save on worn unlubed parts.
I think you're getting a great price on the power service additive at only $9.00 for the 96 ouncer. I have to pay about $10.70 for the same jug.

Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan