09-24-2014, 04:44 PM
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Member
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Join Date: Jan 2011
Location: Blackburn UK
Posts: 417
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The engine would have to be running to have a chance of overfilling (because the torque converter and valve block drain down) and the transmission bulk oil temperature increases at around 5 deg.C. per minute with the engine running.
So say ambient temperature was 10 deg. C. (would anybody try checking their fluid level at a temperature below this?) and it took a minimum of one minute to carry out the check. So that’s a temperature error of 20 deg.C. The volumetric coefficient of expansion will be around 0.0007/deg.C for ATF so that represents 0.13 litres. The throat area of the sump at the filler plug (including deducting the valve block) is around 375cm2 so that represents less than 4mm in fluid level.
My point is, you’d have to try really hard to overfill a 5HP24
Phil
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