Ironically, I've had two fuel thermostats fail in the last 6 months. (separate cars).....I noticed the rebuild kits are about $52 bucks each and just wonder how important these units really are. I can guess that during the Summer, it really does not make a difference, and the only problem that I had was leakage.

Do I need the whole kit or just the oring seal?

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87 300SDL - 215K Miles !!
99 F-350CC Dually PSD - 190K
86 300SDL - 189K
All on B-100

I removed mine from my car. I just got fed up with rebuilding it over and over. I didn't notice anything different without it.

cheers,

EddieE

Its only active in freezing weather, then it only gets the fuel to about 70*f.

Most of the time its only the o-ring needed.

I’d love to ditch mine as well, can anyone see a need for it in Atlanta?

Ive got enough extra hoses under the hood. Would be nice to free up some space down there.

What would you do with the opening in the head?

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Paul
Benz-less
I need an SDL !

so THATS what that thing is...

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Did you ever actually yank this gizmo? I've got a leaking one and am strongly considering abolishing it. How would you plug the hole in the head?

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1987 300SDL 216k
2003 F350 7.3L + Banks - 315k

I guess leave part of a coolant line attached with a bolt plugged down in it.

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Paul
Benz-less
I need an SDL !

There is no coolant line to deal with. Fuel gets heated when it travels next to metal heater pipe, by oil filter. Removed mine, do not expect any problems.