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Everyone with oil temp issues

Originally Posted by Robert_Nash There seems to be some implication, at least, that this alleged problem is more prevalent in manual trans cars but I can't think of any logical

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Old 04-23-2009, 10:34 PM   #1 (permalink)
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Originally Posted by Robert_Nash View Post
There seems to be some implication, at least, that this alleged problem is more prevalent in manual trans cars but I can't think of any logical reason why that would be.

Does anybody have any idea why a manual transmission car would be more likely to have an oil temp issue than an auto trans car?
Here's what I posted today over in Wstar's journal...
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Originally Posted by travisjb View Post
There's prob some truth to your point that fewer AT folks are inclined to track their cars... and I agree the transmission itself isn't likely... and I also think this car runs hot regardless of transmission... but I think with the manual folks are spending more time at higher RPMs, which is a contributing factor... oil heats up with friction and I suspect friction increases non-linearly with RPMs... automatic transmissions should reduce time at higher RPMs vs manual b/c when it upshifts it does so with 99% precision... and I think realistically, most of us guys with manual transmissions are keeping on the gas at least a little between upshifts... and so for example even if we shift at 7,400 rpm, the car is running up to 7,800 rpm when the clutch is pressed... I suspect a lot of heat is building up between 7,500 and 8,000 rpm for the 6mts... Drivers can help by lifting the gas sooner, but I don't blame it all on us drivers, I think the engagement points in the clutch are too high in the pedal stroke... Based on my own experience and from watching videos of guys driving this car, I'm convinced it is happening a lot... until I find some AT guys overheating, I'm going to keep asking the question... sorry for the long-winded explanation!
Honestly, I have no data to back this theory up... other than an observation that folks on this board with 6MT seem to be the only ones overheating to the point of limp mode (so far!)...

WStar made the reasonable point that it should be rev limited even with the clutch in... my car's in the shop so I can't test that, but I seem to remember that mine shot above 7,500 w/ clutch in... anyone willing to check?
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Old 04-23-2009, 11:38 PM   #2 (permalink)
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WStar made the reasonable point that it should be rev limited even with the clutch in... my car's in the shop so I can't test that, but I seem to remember that mine shot above 7,500 w/ clutch in... anyone willing to check?
Will have to be a 6MT person I think. On 7AT, I've never actually tried putting my car in neutral on the freeway and revving, but sitting at a stop it rev limits at like 5K in neutral, you can't go higher unless you're in gear and moving.
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Old 04-24-2009, 09:47 AM   #3 (permalink)
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Originally Posted by travisjb View Post
Here's what I posted today over in Wstar's journal...


Honestly, I have no data to back this theory up... other than an observation that folks on this board with 6MT seem to be the only ones overheating to the point of limp mode (so far!)...

WStar made the reasonable point that it should be rev limited even with the clutch in... my car's in the shop so I can't test that, but I seem to remember that mine shot above 7,500 w/ clutch in... anyone willing to check?
That does make some sense but when I'm doing something like running the Dragon, I'm in manual mode and "shifting" just about as much as anyone with a 6MT would be so it still would seem like a bit of a mystery.
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