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[DIY] Automatic Gearbox Cooler
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<blockquote data-quote="Izso" data-source="post: 1064110369" data-attributes="member: 2429"><p>overkill with the hose is nothing more than money spent. </p><p></p><p>Finding out the oil temp and pressure would be more work. At one point of time I wanted to get the oil pressure and oil temp meters for all oil outlets in my car, but it all added up to be more than I could afford so it's temporarily on hold until reliable meters get cheaper.</p><p></p><p>Just fyi though, most ATF cooler kits come with high pressure hoses, they aren't high temp (ie-fuel hoses). The Oil cooler kits on the other hand come with steel braided hoses. What does that mean? No idea. Oil pressure is probably way higher in the engine compared to the gearbox. That possibly indirectly also means there's less heat in the gearbox? Looking at the original gearbox cooler line, which is one tiny thin line in the radiator (auto cars only) I suspect I'm right. The question is just how hot it's supposed to be. </p><p></p><p>Considering radiator water temperatures reach up to 80 degrees or 90 degrees in a normal car, the engine oil is probably within the same range or thereabouts. </p><p></p><p>I'm also going to guess the ATF is not going to be nearly as hot since the stock cooling line is so miniscule in comparison to what the radiator is supposed to do for the engine. </p><p></p><p>So again, my guess is your 70 degree high pressure fuel hoses is going to last and work normally in your car as long as you don't somehow manage to overheat the ATF. No idea how you'd do that other than driving it hard on a low gear.</p><p></p><p>Oh btw, I DIY oil removal and I've removed hot ATF oil before. It's not hot enough to burn my hand but it's hot enough to feel uncomfortable.</p></blockquote><p></p>
[QUOTE="Izso, post: 1064110369, member: 2429"] overkill with the hose is nothing more than money spent. Finding out the oil temp and pressure would be more work. At one point of time I wanted to get the oil pressure and oil temp meters for all oil outlets in my car, but it all added up to be more than I could afford so it's temporarily on hold until reliable meters get cheaper. Just fyi though, most ATF cooler kits come with high pressure hoses, they aren't high temp (ie-fuel hoses). The Oil cooler kits on the other hand come with steel braided hoses. What does that mean? No idea. Oil pressure is probably way higher in the engine compared to the gearbox. That possibly indirectly also means there's less heat in the gearbox? Looking at the original gearbox cooler line, which is one tiny thin line in the radiator (auto cars only) I suspect I'm right. The question is just how hot it's supposed to be. Considering radiator water temperatures reach up to 80 degrees or 90 degrees in a normal car, the engine oil is probably within the same range or thereabouts. I'm also going to guess the ATF is not going to be nearly as hot since the stock cooling line is so miniscule in comparison to what the radiator is supposed to do for the engine. So again, my guess is your 70 degree high pressure fuel hoses is going to last and work normally in your car as long as you don't somehow manage to overheat the ATF. No idea how you'd do that other than driving it hard on a low gear. Oh btw, I DIY oil removal and I've removed hot ATF oil before. It's not hot enough to burn my hand but it's hot enough to feel uncomfortable. [/QUOTE]
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[DIY] Automatic Gearbox Cooler