rdsaustintx
Veteran Member
</font><font color="blue" class="small">( I guess I'm not clear either, overheated hydraulic fluid tends to thin out thus creeping past the clearances easier and what I would surmise would make it less efficient. I only know this from previous tractors. The cold condition lasts for a very short time. I would take a guess my fluid never gets much past 160 degrees based on my ability to touch the hoses and filters and not get to uncomfortably burned. Your right that the loss in a HST tranny will happen regardless as it will in any transmission built but to a lesser extent. Its just that without the cooler there controlling the fluid temperature, the loss would in all likelyhood increase expontentially as the temperature increases beyond a certain level. What that level is is beyond me but I would think anything exceeding a couple hundred degrees could be a problem.
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I wish I knew how to be eloquent about this. Sort of expected one of the real hydraulic gurus here to chime in by now.
Hot oil is not what normally causes the mechanical power loss. Heat is the symptom of HST inefficiency, not the cause.
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I wish I knew how to be eloquent about this. Sort of expected one of the real hydraulic gurus here to chime in by now.
Hot oil is not what normally causes the mechanical power loss. Heat is the symptom of HST inefficiency, not the cause.
