Transmission temperature question
We just came back from a week of camping, driving from Colorado Springs to Ridgway State Park near Ouray and back. We drove Hwy 50 over Monarch Pass. This was our first time going over a truly high ...
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That chart is ancient history !
I worked in transmission engineering for one of the Big 3 back in the 80s. Even THEN, sustained temps under 230F were hot, but did not cause fluid or component failure.
Today, almost ALL transmission fluid is synthetic or synthetic blend and can comfortably handle 250F. Under 200F is ridiculous because most transmission coolers are inside the radiator and the engine coolant temperature is typically over 200F !
Don't get me wrong. Yes, you should check your transmission fluid regularly, more often if you are towing or carrying heavy loads. If it smells burnt or is NOT bright cherry red, it is time for a change. And use the EXACT fluid recommended by the manufacturer, Skip the "boutique" stuff !
Sure, keep it cool is the best policy, but lets be realistic !!
I worked in transmission engineering for one of the Big 3 back in the 80s. Even THEN, sustained temps under 230F were hot, but did not cause fluid or component failure.
Today, almost ALL transmission fluid is synthetic or synthetic blend and can comfortably handle 250F. Under 200F is ridiculous because most transmission coolers are inside the radiator and the engine coolant temperature is typically over 200F !
Don't get me wrong. Yes, you should check your transmission fluid regularly, more often if you are towing or carrying heavy loads. If it smells burnt or is NOT bright cherry red, it is time for a change. And use the EXACT fluid recommended by the manufacturer, Skip the "boutique" stuff !
Sure, keep it cool is the best policy, but lets be realistic !!
