PeterTRR Posted May 1, 2021 Report Share Posted May 1, 2021 Need recommendations for a j type gear box i have been looking at Morris Golden Film AG90 any thoughts. Thanks Peter. Quote Link to post Share on other sites
jerrytr5 Posted May 1, 2021 Report Share Posted May 1, 2021 Any GL4 EP80/90 was the factory recommendation so I guess not. Have you tried a search on this forum - you will find many opinions to consider. Jerry Quote Link to post Share on other sites
Mike C Posted May 1, 2021 Report Share Posted May 1, 2021 1 hour ago, jerrytr5 said: Any GL4 EP80/90 was the factory recommendation so I guess not. Have you tried a search on this forum - you will find many opinions to consider. Jerry +1. Asking for opinions on the the right oil for a TR6 gearbox opens a can of worms. Personally I use good quality GL4 oil in my GB with A type OD, a garage put GL5 oil in by mistake once and the friction modifiers stopped the synchro cones from working- it took two flushes with GL4 to restore normality. Quote Link to post Share on other sites
Drewmotty Posted May 2, 2021 Report Share Posted May 2, 2021 Penrite GB40 Quote Link to post Share on other sites
Kevo_6 Posted May 2, 2021 Report Share Posted May 2, 2021 +1 Penrite GB40. Quote Link to post Share on other sites
RogerH Posted May 2, 2021 Report Share Posted May 2, 2021 11 hours ago, jerrytr5 said: Any GL4 EP80/90 was the factory recommendation so I guess not. Have you tried a search on this forum - you will find many opinions to consider. Jerry As stated above it must be a GL4 spec EP80/90 originally specified. The Penrite GB40 works very well in the 'A' type GB/OD Avoid 25/50 engine oil as it may have high detergent level and cause frothing. The Morris Golden Film AG90 is a GL1 spec so doesn't really fit the bill Roger Quote Link to post Share on other sites
DRD Posted May 2, 2021 Report Share Posted May 2, 2021 I use the Dynolite gearbox oil, similar to the Penrite stuff. Quote Link to post Share on other sites
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