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Old 13-08-2012, 14:05   #1
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2QM15 Yanmar Marine Diesel

What kind of transmission fluid should go into a 2QM15 Marine Diesel engine?
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Old 13-08-2012, 15:18   #2
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Transmission fluid is for transmissions. What gear does your engine have on it?
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Old 14-08-2012, 00:27   #3
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Re: 2QM15 Yanmar Marine Diesel

i had transmission fluid in my 2qm20 when i bought it which probably explains the burnt out forward clutchplate. On my engine at least (there are at least a couple of different gearboxes that were fitted to these engines) all the good sources i found were adamant that it took the same monograde 30 oil that the engine takes - since i replaced the clutches 3 years ago thats what its been running on without any probs. you'll have to do a bit of research and find out which gearbox you have and what lubricant it takes - please dont just take a guess cos it can be quite expensive if you get it wrong. i think one of the boxes was a kanazaki-hurth which was not the one i had - but i cant really remember now
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Old 14-08-2012, 04:55   #4
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Re: 2QM15 Yanmar Marine Diesel

The oil that goes in the 2QM15 also goes in the gearbox - same oil, just a bit less of it...
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Old 15-08-2012, 11:21   #5
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My diesel mechanic preaches motor oil in transmission is old school even though manufacturer recommends. He uses atf
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