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TOPIC: Suitable oils

Suitable oils 7 months 1 week ago #819

  • Alan
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Hello,
Can anyone advise this relative novice what’s the most suitable oil for the 398cc ABC in
- the gearbox
- the oil tank
Many thanks,
Alan
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Suitable oils 7 months 1 week ago #820

  • Andrew Kelsey
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I contacted Castrol Classic Oils last year re ABC car engines(Trevor Allman This email address is being protected from spambots. You need JavaScript enabled to view it. )

They came back with this specification
Engine Castrol XXL 40
Gearbox Castrol ST90
- presume similar for the bike engines?
- I suggest send Trevor an email, he was very helpful.
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Suitable oils 7 months 1 week ago #821

  • Alan
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Many thanks. I’ll do that. I’ll post his response if he says anything different which I doubt.
Alan
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Suitable oils 7 months 1 week ago #822

  • Roger
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The original recommentdation would probably have been for XL SAE30 in winter and XXL SAE40 in summer and that is what I use in my bikes but I use a multigrade 20-50 in my cars.
Gearbos is ST SAE90 is fine but avoid EP oils as the additive attacks bronze bearings. I use SAE120 in the back axle mainly because it doesn't leak as readily but isn't a problem with the ABC as it doesn't have a diff.
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Suitable oils 7 months 1 week ago #823

  • keithsams
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i have been running on straight 40 but last year changed to 50
i suppose it depends how worn your engine is ?
and as roger says 90 without additives. wear is minimum but then it depends how many miles you do but generally it will not be many
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