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Its been a bit hot lately and I've noticed my Oil temperature gauge is reading slightly higher then the normal 90c mark, its been very close to 100c if not at 100c these past couple days. Just wondering if this is ok for the GTT Skyline? Should I perhaps do a coolant flush and replace the coolant?

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Don't worry about it. The stock water temp gauge shows nothing. I boiled over and it didn't even make it to the hot section.

My water temp on the track the other day was 109 and it didn't move from the middle.

100 for oil is fine. If it goes over that much then worry.

My car runs about 95 in normal street conditions on hot days.

The other night (cool night) I took my car through the hills, giving it pretty hard for about 10minutes flat out, and the oil temp reached about 105 degrees.

I then drove it normally for 10mins and it stabilised back down to 95.

Is this okay?

I am running Motul 8100.

>120C and I'd be thinking about easing up because the oil viscosity will be thinning out. But if you are using the 5W50 then it should still be OK but still wouldn't venture over 130C under any circumstance.

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