Suitable oils

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4 years 4 months ago #819 by Alan
Suitable oils was created by Alan
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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4 years 4 months ago - 4 years 4 months ago #820 by Andrew Kelsey
Replied by Andrew Kelsey on topic Suitable oils
I contacted Castrol Classic Oils last year re ABC car engines(Trevor Allman autotechenquiries@castrol.com )

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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Last edit: 4 years 4 months ago by Andrew Kelsey.

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4 years 4 months ago #821 by Alan
Replied by Alan on topic Suitable oils
Many thanks. I’ll do that. I’ll post his response if he says anything different which I doubt.
Alan

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4 years 4 months ago #822 by Roger
Replied by Roger on topic Suitable oils
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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4 years 4 months ago #823 by keithsams
Replied by keithsams on topic Suitable oils
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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