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#16
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I'm a constant gauge checker and last summer I always maintained 85 to 90 degree coolant temp on the interstate but this winter, I can only max at 85 and when I go from 80 mph in the interstate to 60 on back roads, it quickly drops to about 75 degrees, sometimes down to 70 (ambient temps of about 50). I have a new 85 degree Behr thermostat and am about to install it with some zerex. I'll let ya'll know what effect this has on MPG. FWIW, I thought my temp gauge was inaccurate so I hit the thermostat housing with the IR gun and it was close to the gauge temp, then I ohm'd the temp sensor on the head and it matched the gauge so I know the gauge is reading correctly. Willson, 85 300CD |
#17
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#18
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__________________
'97 E 300 D |
#19
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Make sure you get a good coolant for diesels that has a higher boiling point as well, like Pentofrost NF.
Phil Forrest
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1972 220D "Trudy," named by a friend. "The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests." Tom Abrahamsson |
#20
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I am of the opinion that you can run it as hot as you want as long as cooling system is pressurized as needed and you keep the egt below what it takes to melt a piston.
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Jim |
#21
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I definately plan on testing the thermostat before installing. And its actually an 80 degree t-stat. Isn't that what most people normaly use on the turbo OM617?
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#22
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__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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