Big R Posted June 24, 2021 Share Posted June 24, 2021 I dumped the oil out of both boxes on my quad and need to know how much to put back in. Also what oil do u guys prefer? Quote Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/ Share on other sites More sharing options...
Rob Posted June 24, 2021 Share Posted June 24, 2021 (edited) 90wt gear oil. I still use oil meeting the GL-4 standard myself. I have a bulk pump with no totalizer so can't answer to quantity required but fill to the level of the fill plug threads. Let it set a few minutes and top it off again Edited June 24, 2021 by Rob 1 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/#findComment-475757 Share on other sites More sharing options...
Big R Posted June 24, 2021 Author Share Posted June 24, 2021 Thanks Rob. Quote Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/#findComment-475764 Share on other sites More sharing options...
theakerstwo Posted June 24, 2021 Share Posted June 24, 2021 Depends on what trans you have.For a eaton or roadranger use a 50W engine oil and for a mack trans use a 90W rear end grease or multipurpose'The eaton will hold from 29 to 31 pints. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/#findComment-475767 Share on other sites More sharing options...
Rob Posted June 24, 2021 Share Posted June 24, 2021 6 hours ago, Big R said: Thanks Rob. No worries. If a Mack transmission don't forget to remove the very large hexagon shaped plug in the side of the case and clean the magnet this plug houses. The magnet is in the oil flow path from the oil pump and catches metal burnishings to keep them from riding around with the oil. 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/#findComment-475776 Share on other sites More sharing options...
MACKS Posted June 24, 2021 Share Posted June 24, 2021 I thought 85-90 was the go to lube,that’s what I always used in 6 speed,quad box and now a 12 speed? Quote Link to comment https://www.bigmacktrucks.com/topic/67123-tranny-fluid/#findComment-475778 Share on other sites More sharing options...
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