_ethrty-Andy_ 2136 Report post Posted October 23, 2011 (edited) Anyone know if replacing gearbox oil would cause it to whine/should it quieten down? Brought from a manual conversion, so hasn't been used previously by me and came with no oil when purchased. Ta The oil used was 75W-80, is this too thin? The one i bolted to the m52 did that for a week or so and then came right. No idea why though E: that was 80w90 Edited October 23, 2011 by _Ethrty-Andy_ Quote Share this post Link to post Share on other sites
*Glenn* 855 Report post Posted October 23, 2011 The oil used was 75W-80, is this too thin? No it's not too thin. The correct oil is G3 full synthetic. Or you can also use 75w80 full synthetic like Elf Synthese.. which is what I use. Quote Share this post Link to post Share on other sites
*Glenn* 855 Report post Posted October 23, 2011 E: that was 80w90 Most 80w90 grades are hypoid diff oils... not gearbox oil Quote Share this post Link to post Share on other sites
