maybe a silly question but can you mix semi synthetic with fully synthetic lincoln harly didnt give me enough for oil change just need abit more to top it up but thought i would ask thanks

Ok thanks for the info

Dunno GH, I have heard all sorts on this.

Ever since I changed the oil in the falco I have had some cam noise from the front pot, anyway they use hydraulic tensioners and this week I got fed up with it so drained a liter of the semi out and tipped a liter of 20-50 mineral in-noise gone

Oh did I ever mention your avata? Nice

N.

Wouldn't stop me (just put a litre of synthetic in my car - no idea what was already in there!), but then again I am no oil expert...

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08 Specialized Langster

Saying that, if it were an engine I loved, I would know what oil was in there and I would not mix it unless I was in a pickle, and in which case I would change the oil quite quickly afterwards...

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08 Specialized Langster

In the '70's we used to mix Bel Ray synthetic with Castrol R for premix 2 stroke racers, the synthetic looked after the pistons and bores and the R looked after the mains. We had no problems.

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Spencer Racing... www.spencerracing.co.uk

Thanks guys i have just topped the bike up so should be ok thanks

Your not supposed to mix synthetic and mineral oil but not so sure about semi synthetic but I wouldn't do it unless it was just an old runabout.

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Norrie.

I used Asda value oil in my old Volvo. Wasn't gonna put £30 of oil in a £250 car.
I use the correct stuff in the Buell cos I actually give a shit.

Very little oil is true synthetic, most is modified dino oil. The bloke at Morris oils says it's ok to mix synth and dino but you won't get the benefits of the synth polymer chains etc.

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If your dreams don't scare you, they are not big enough.

Can I just scoop some up from the Bay of Mexico? There might be a bit of water mixed in but that doesn't matter does it?

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Buell = Cool ... Sun = Fun!!!