SOHC.co.uk Forums > CB500/550
10W-50 oil
matthewmosse:
I had cluch slip with one particular semi synth oil that was cheap. I now use a 'fleet' oil suitable for petrol or diesel plus turbo engines that seems to be fine with all my Hondas and isn't too expensive. At one stage I had an engine that leaked on evey joint or so it seemed, I assumed atthe time it was due to the age and fact it was a low milage US inport that had been stood a good while but on reflection it was at the time I tried that cheap oil and the leaks did eventually stop which might well concedentally be when I filled with more costly oil. I always run 10/40w and try to not switch brands too often. Silkolene got stupidly exspensive and I've not found a cheap consistently available oil that's sold somewhere convienient for me so I use that Morris 'fleet' oilthat is sold in farmers merchants for quads, handily I can also put it in our landrover or my dumper too. Since it's main target use is farm quads which are aircooled jap bikes with wet clutches I recon it's gonna be formulated closer to the desired speck than a lot of dedicated motorcycle oils that assume moden requirements.
Bryanj:
If you look into the specs originaly quoted the Silcolene(Now Fuchs) Trasnfleet 10w40 was exactlty the correct spec for the 70's Hondas and as it's changed every 1500 miles (Or supposedly annualy if you don't go that far) why buy the expensive stuff.
If you can't get that look at the Tesco own brand NON Synthetic DIESEL oil, it also is the right spec and at £12 a can not too bad on price
ST1100:
--- Quote from: Bryanj on October 06, 2012, 04:16:55 PM ---...why buy the expensive stuff.
--- End quote ---
Can the change interval not be extended with full synth oil?
AFAIK do they feature abilities supporting such... besides reduced wear and chemical reactions while use...
Bryanj:
Can't realy extend the intervals as its used as gearbox oil as well which is what hammers it
ST1100:
Yes, but don't they have a higher shear resistance?
On my touring rig(s) (gearbox also in the engine oil) we've intervals of 12.000km/7500miles...
Or is the blow-by the issue?
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