Although I may have sold my Roadster it still seems to be my job to maintain it. So whilst driving it to assess the misfire (new plugs, point stc cured that) I noticed the gearbox seemed noisy. So off to the motor factors to purchase some EP 90 - alas not . They now offer EP 80W90 (I think) which is obviously a multigrade. I asked the assistant if this would be OK for an overdrive Trimph gearbox. The answer I got was possibly - it depends on who you ask. Some say it will be OK and others perhaps not. Fortunately I had sufficient for now. The advice seems to be that some of the EP adativesin newer oils can damage yellow metal parts (ie bronze and copper). The adatives used in the higer rated oils (ie GL5) are potenially more corrosive.
Can anyone shead any light on this? The oil is also used in the front trunions (phosphor bronze!) so any thing that attacks yellow metals would not be a good idea!
Regards
Nick
Can anyone shead any light on this? The oil is also used in the front trunions (phosphor bronze!) so any thing that attacks yellow metals would not be a good idea!
Regards
Nick
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