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Old Jun 11, 2020 | 05:55 AM
  #49 (permalink)  
phil alvirez's Avatar
phil alvirez
Senior Member
Joined: Jun 2019
Posts: 1,047
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From: windsor ontario next to detroit
Default Re: Changing manual gearbox oil

on post 45 i presented data on how the sae figures compare depending if for engine oil or gear box oil. what is mentioned is that for engines, the temp for the high point is the operating temp of the engine, and on gears is 100 C degrees (212 F). but the operating temp is not mentioned and i didnt know it, so searched and found this somewhere:
"Now that I have a engine performance data logging computer installed in the car I monitor many of those parameters when I'm at the track... The cooling system seems to work really well on this car... I've run it on the track in 105 degree weather and the highest ECT (engine coolant temp) logged was only 212 degrees... That was represented on the gauge at the midway point... From a cold start sitting at idle it will run about 183-185 degrees... It seems that the fan sensor trips at about 190 degrees.." so this is engine oil temp.
in other words:
sae figures shown for the numbers after w are:
for engine oils: 212 f;
for gear oils: 212 f
so are measured at the same temp.
but, is it possible that the gear box may run at 212 f degrees? that hot? any1 has data on this?

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Last edited by phil alvirez; Jun 11, 2020 at 07:07 AM. Reason: adding data
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