EOT low maybe?
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EOT low maybe?
Ok took the truck out for the afternoon (open road/city street driving) watched the water temp average 179* oil temp average 123*. Ok did a search and found oil temp should be the higher of the two. Is this anything to be concerned about or just drive the truck and quit analyzing everything.
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The starting temps were all in line ambient temp upper 60s engine temps lower 70s (both eot & ewt). Will look again in the morning and get exact numbers. Driving time roughly 40 minutes one way with some idle time mixed in.
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That I do not know, but will check on it.
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I tow 4000lbs 5 days a week and my coolant is always at least 10* hotter than my oil warming up but after about 15 or 20 minutes of towing (at the same light) they always meet right at 180* and the oil takes over and they stay within 10 or 12 all day. And the little bit I do drive with an empty load, the oil and coolant stay even closer and cooler. But the coolant is always gunna get hotter first. 50* difference is weird though. Run it for a long ride and try and get everthing up to 200*. See what your numbers are.
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Fleet Mechanic
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From: 'Pitlock, Maine
Oil is going to be as hot or a little hotter at best because the water is what is holding your oil temps at bay....otherwise friction would send your oil temps over the edge. water temps. sound about right if the ambient temps. are around 75 to say...80 so I would suspect a bad temp sensor on the oil side. jmho.
Hotshot
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From: Stuttgart, Ar
Agreed. Your coolant temp is WAY too cold after 40 minutes but so is your oil temp, which should be equal or greater than your coolant temp. You might get an infrared temp sensor to shoot your ECT sensor with to see how close it is.
Fleet Owner
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Oil is going to be as hot or a little hotter at best because the water is what is holding your oil temps at bay....otherwise friction would send your oil temps over the edge. water temps. sound about right if the ambient temps. are around 75 to say...80 so I would suspect a bad temp sensor on the oil side. jmho.
Fleet Mechanic
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From: 'Pitlock, Maine
I agree with you and I was assuming (probably wrongly so) that the original poster was far enough into his trip to have everything up to operating temps. but since He didn't SAY that I stand corrected, the oil will warm up slower than the water until the water reaches its operating temp. The oil will then catch up and level out or go a bit above the water temp. So I guess that the Thermostat could be bad or at least the water temp sensor could be the culprit. The water temp sounds to be about right when not under a load and the ambient temp being what I stated before so I assumed (again, probably wrongly so ) that it would be the oil temp sender that was bad. My mistake. Assuming always leaves room for error. Mcrafty1
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From: Nor Cal
I agree with you and I was assuming (probably wrongly so) that the original poster was far enough into his trip to have everything up to operating temps. but since He didn't SAY that I stand corrected, the oil will warm up slower than the water until the water reaches its operating temp. The oil will then catch up and level out or go a bit above the water temp. So I guess that the Thermostat could be bad or at least the water temp sensor could be the culprit. The water temp sounds to be about right when not under a load and the ambient temp being what I stated before so I assumed (again, probably wrongly so ) that it would be the oil temp sender that was bad. My mistake. Assuming always leaves room for error. Mcrafty1
Fleet Owner
Joined: Nov 2003
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I agree with you and I was assuming (probably wrongly so) that the original poster was far enough into his trip to have everything up to operating temps. but since He didn't SAY that I stand corrected, the oil will warm up slower than the water until the water reaches its operating temp. The oil will then catch up and level out or go a bit above the water temp. So I guess that the Thermostat could be bad or at least the water temp sensor could be the culprit. The water temp sounds to be about right when not under a load and the ambient temp being what I stated before so I assumed (again, probably wrongly so ) that it would be the oil temp sender that was bad. My mistake. Assuming always leaves room for error. Mcrafty1
my mistake