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Old Aug 14, 2015 | 07:00 AM
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cornstar6207
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EOT

I know I've seen it posted on here before, but for the life of me I can't find it. What is the maximum safe temp on engine oil? Mine is running at 212 unloaded at 60 mph. Thanks for all replies.
 
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Old Aug 14, 2015 | 08:00 AM
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From: Marietta, GA
212 is fine.
I think the truck will defuel at 250.
 
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Old Aug 14, 2015 | 08:01 AM
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87crewdually
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If the PCM sees an oil temp > 110°c (230°f) for a period of time without a decrease in temperature it will throw a code P0298.
So with that said, if I'm towing heavy pulling a grade I wouldn't let it hit much over the 230-240 mark for any length of time. I normally only see 220's at the most and once I crest it comes right back down to 210 or so.
 
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