just changed the oil and...
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Year: 1996
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just changed the oil and...
1996 auto sport 4.0
so i changed my oil today and i usually run 10w30 but i was interested in trying 15w40 after reading some things on here. so i put rotella 15w40 in. so heres my problem my jeeps running a whole lot hotter like 30 degrees hotter now. my usual is around 200-210 and now its hitting around 230 and i seem to have some power loss when accelerating.
why did changing the oil do this and should i just swap back to 10w30?
so i changed my oil today and i usually run 10w30 but i was interested in trying 15w40 after reading some things on here. so i put rotella 15w40 in. so heres my problem my jeeps running a whole lot hotter like 30 degrees hotter now. my usual is around 200-210 and now its hitting around 230 and i seem to have some power loss when accelerating.
why did changing the oil do this and should i just swap back to 10w30?
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Changing the oil shouldn't make it run 30 degrees hotter however, all else being equal, thicker oil runs hotter due to increased resistance to flow. Something else caused a 30 degree coolant temp increase.
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I am flushing the radiator tomorrow maybe that will help. But I have changed nothing else and probably change it back
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i just went from 15w-40 rotella back to a 10w-30 and haven't noticed a change in temp but have noticed a huge difference in gas mileage.
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Something, other than the oil, changed.....ambient temp, driving conditions, cooling system component failure, gauge/sending unit wacked, something.
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I agree. There is no way that your oil change to Rotella by itself has resulted in a 30 degree coolant temperature change.
Something else is going on.....start by verifying that temperature by pointing an infrared point and shoot thermometer directly at the thermostat housing of a hot engine.
Something else is going on.....start by verifying that temperature by pointing an infrared point and shoot thermometer directly at the thermostat housing of a hot engine.
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