Norton 750 transmission fluid

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Northdakota

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New to Norton’s, wondering what kind of transmission fluid does a 71 750 commando take? Thank you for your help.
 
Northdakota said:
Thank you! Can you please describe what exactly is the difference between GL4 and GL5?
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The main difference between GL-4 and GL-5 gear oils is the amount of EP additives. Sulphur/Phosphorus containing products are used as EP-additive. This additive has the purpose to prevent the occurrence of micro-welds on the gear flanks at the local high temperatures which prevail in EP circumstances (temperatures well in excess of 800℃!) GL-5 has roughly twice the amount of EP additives compared to GL-4, which is why it is often used in high-pressure circumstances such as in a front axle and rear axle differential.

Sulphur/Phosphorus additives however have an unfavourable property: they can react aggressively towards bronze and copper. This can be disastrous for the synchromesh rings of a gearbox. Therefore it is not recommended to use GL-5 in a gearbox unless the manufacturer allows this.
 
gortnipper said:
The main difference between GL-4 and GL-5 gear oils is the amount of EP additives. Sulphur/Phosphorus containing products are used as EP-additive. This additive has the purpose to prevent the occurrence of micro-welds on the gear flanks at the local high temperatures which prevail in EP circumstances (temperatures well in excess of 800℃!) GL-5 has roughly twice the amount of EP additives compared to GL-4, which is why it is often used in high-pressure circumstances such as in a front axle and rear axle differential.

Sulphur/Phosphorus additives however have an unfavourable property: they can react aggressively towards bronze and copper. This can be disastrous for the synchromesh rings of a gearbox. Therefore it is not recommended to use GL-5 in a gearbox unless the manufacturer allows this.
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Thank you so much for the in depth explanation! This really helps
 
i only said what's the best oil to see if i could get another oil war going actually i use RedLIne Heavy Shockproof trans oil in all my bikes and the 68 MGB have used it for years works great for me
 
alan hodge said:
i only said what's the best oil to see if i could get another oil war going actually i use RedLIne Heavy Shockproof trans oil in all my bikes and the 68 MGB have used it for years works great for me
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I take offense to that.
 
alan hodge said:
i only said what's the best oil to see if i could get another oil war going actually i use RedLIne Heavy Shockproof trans oil in all my bikes and the 68 MGB have used it for years works great for me
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trans oil? TRANS OIL??? This PC/Diversity madness has to stop!!....
(Would that be a MGQGBT?)
PS: There's probably a: 'gender fluid' or 'help finding gender neutral' joke in there too, but maybe a step too far...
 
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Astroglide?? Sounds like a good name for a new 'Marvel' type 'Superhero'... Not too sold on his catchphrase, though.
 
Apologies to the OP for a thread derailment which appears to have ended up at the back door....
Might be of use for those pesky isolastic rubbers, perhaps?
 
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