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Oil recommendation 1977 cb550F2?

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Bryanj:
SilKolene transfleet  but don't know what the Fuchs (took over silkolene) equivalent is, if you ring DO NOT say its for a motorbike or they will want to sell you the expensive stuff.

Tesco mineral Diesel oil is same spec, Partco has gone bust but you should have a motor factor local, take in the SAE spec from the handbook specify MINERAL not synthetic or semi synthetic and don't be talked into modern bike specific stuff that costs an arm and a leg.

Change every 1500 miles or at least once a year, I always change filter as well don't see the point of putting clean oil through a dirty filter and you can get a deal on a batch from DS

peterengland:
I had always used the Tesco stuff but it did seem to get very thin when the engine was hot, popped into DSS and they recommended the semi synthetic Motorex which does not have the additive that causes clutch slip, since using this in my 550 and 750 the engines seem quieter when hot and I had a very small leak on my 550 from the top end covers and this doesn't happen now. I know the engines were not designed for synthetics but the oil technology has come so far that the original Honda engineers may have chosen this oil if it were available back then?

JustcallmeMrT:
Well I grabbed a bottle of the tesco stuff, so I'll give that a whirl, and then maybe swap to the motorex and see if there's a difference.

Nurse Julie:
I had a slight clutch drag on 400 when I got it. Dont know what oil it had in it but changed oil and filter and used some oil my dad used to put in his Hilman Hunter back in the day, just loked on can (very rusty) and its castrol GT. Asda do Castrol 10/40 semi synthetic, so may have to use that next time. :-*

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