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How hot is too hot for oil temperature?

How hot is too hot for oil temperature?

The upper limit for most mineral-based oils is about 250 to 300 degrees F. Synthetics can take up to 450 degrees F. or higher (some as much as 700 degrees F).

What should the oil temperature be for a new engine?

If one runs a cruise oil temperature in a new engine, there will be additional friction in the ring belt area until the rings seat. This is normal, so an oil temperature of 245° will not hurt — and may aid — the seating process.

How many miles before you need an oil change?

Moreover, if your car’s engine requires full-synthetic motor oil, it might go as far as 15,000 miles between services! You cannot judge engine oil condition by color, so follow the factory maintenance schedule for oil changes.

Is it OK to run an engine at 245°?

Running at 245° may be OK during break-in or during climb out, but I do not recommend running continuously at cruise condition at this temperature after your engine is broken-in. In many aircraft, the only indication of how your engine is operating is the oil temperature.

What does 245° oil sump temperature tell you?

In many aircraft, the only indication of how your engine is operating is the oil temperature. A 245° oil sump temperature is an indication of incorrect tuning or engine installation.

What should the oil temperature be in an engine?

So in general oil temperatures in the sump are less or in par with engine coolant temperatures. But oil can reach very high temperatures for a very short time in the hottest parts of engine (around piston rings). For non-synthetic motor oil, the traditional approach is to try to hold oil temperatures between 230 and 260 degrees F.

Why does oil take so long to come up to temperature?

You see, the oil, especially in colder ambient temperatures, takes several times longer to come up to temperature. Oil will not get to complete operating temperature easily by simply idling, it requires driving around and putting SOME load on the engine. I see people in the pits at races all the time reving their motors to ‘warm the engine up’.

What’s the maximum temperature for synthetic motor oil?

For full synthetic motor oil, maximum can exceed 300 degrees. In all cases, less than 212 will cause water buildup in the crankcase. See this link for more information. Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.

Running at 245° may be OK during break-in or during climb out, but I do not recommend running continuously at cruise condition at this temperature after your engine is broken-in. In many aircraft, the only indication of how your engine is operating is the oil temperature.

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Ruth Doyle