Originally Posted By: Astro14
The classic trap: high outside air temperature = high oil temperature.
In fact, that's not usually true.
I had an oil temp gauge on a Volvo Turbo years ago, wonderful bit of insight. Oil temperature rose slowly with engine operation, and stabilized about 10 minutes after coolant temp stabilized.
In the below zero winters of Colorado, it ran about 85C once the engine was fully warmed.
In the humid, hot summers of Virginia Beach, it ran about 85C once the engine was warmed.
However, using the turbo heavily in the mountains in the cold winter, oil temp would rise to 105C. Cold outside, but hot oil due to the heat generated inside the turbo that the oil was picking up...for that car, load mattered far more than air temp. Since your car isn't a turbo, I doubt you'll see much variation in oil temp once it stabilizes...
Something I'll add to that,my temp gauge reads slightly cooler on the hottest summer days. Guessing my car must have a really good/strong cooling system. So with my car,hotter ambient outside temps make my car run slightly cooler via the temp gauge.