SOHC.co.uk Forums > CB350/400

What is the best sump oil for a CB400F

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Athame57:
Is the most expensive sump oil really the best? Where do you get older style oil these days if it is better?

Bryanj:
I bought mine off ebay. 40ltr (2 drum) about £75 delivered.
Mannol 15w40

Athame57:

--- Quote from: Oddjob on August 05, 2020, 02:13:13 AM ---I have 25 litres of Mobil oil from the early 80s in my garage, 10-40w.

--- End quote ---
LOL...it is still ok?

Bryanj:
Oil dont go off

pewe:
Oil for cars can cause slipping clutch.
I gave my CB750 Mobile 1 in the 80"s to ensure a good oil. Clutch slipped when twisting hard shifting to 5:th. Released throttle a little and twist again sounded like enter another gear.

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