SOHC.co.uk Forums > CB350/400

Oil Change

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Integra99:

As I'm being lazy does anyone know the exact spec for oil on the CB400f?

Dave487:
The little Honda handbook says to use a high detergent oil to meet or exceed the requirements for 'Service SE'. with a viscosity of SAE20 or SAE20W for winter. Or a multigrade SAE 10W-40.
The service SE spec is for petrol engines made before 1979 and has been superceded several time to meet the requirements of modern engines and fuels and is now up to service SN.
This could be quite important now that we are forced to use fuels with 5% or more ethanol.

The link below is quite interesting.
http://www.kewengineering.co.uk/Auto_oils/oil_quality_ratings.htm

K2-K6:
That's an interesting site Dave487, I haven't seen that one.

Thanks for posting it.

Rob62:
Talking of ethanol, i presume you guys use premium petrol in your classic 4strokes? I always do in my strokers and intend to with the cb750 once its otr... for a couple of extra quid per tank full it has to be worthwhile?

I avoid supermarket petrol like the plague! Except tesco premium which is quite good i believe  ;D

Nurse Julie:
I never use premium and only ever use the cheapest supermarket fuel I can find. You will get lots of differing views on that question  ;D ;D
Edit....and before anyone says anything about the state of my pistons......don't!!!!

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