Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > dumb DD race prep questions from non ducati man

[chris.p]

Originally Posted by banger san

Why not fully synthetic?

Fully synthetic ok on a 583, but not a 620 as the clutch will slip till it gets hot.


Chris

[banger san]

Originally Posted by chris.p

Fully synthetic ok on a 583, but not a 620 as the clutch will slip till it gets hot.


Chris

There's been a lot said about about clutches slipping when synthetics are used, that is typically caused by using oils with friction modifiers in them, a good quality synthetic designed for use in a motorcycle engine is unlikely to have friction modifier added so the clutch should not slip.

Andy

[antonye]

Originally Posted by banger san

There's been a lot said about about clutches slipping when synthetics are used, that is typically caused by using oils with friction modifiers in them, a good quality synthetic designed for use in a motorcycle engine is unlikely to have friction modifier added so the clutch should not slip.

When DD first started, many years ago, we were all given sponsorship packs from Shell which included their fully synthetic oil.

I think just about everyone had problems with clutch slip using that, but once we switched to the semi-synth it was resolved.

The fully synth didn't go to waste - it went in my 748 instead

[Spjallen]

Andy is from the south, money is not an issue!! Fully synthetic oil, no problem!

[chris.p]

Originally Posted by Spjallen

Andy is from the south, money is not an issue!! Fully synthetic oil, no problem!

L.M.A.O.

Chris

[mat2hew]

I used shell fully synthetic in 2011 and at the end of the year my rebuild cost loads, all the bearings were burned, the engine was pretty much fcuked, I was told that the oil was to blame, not up to racing, and to use putolin 15/50 semi-synthetic.

[banger san]

Originally Posted by mat2hew

I was told that the oil was to blame, not up to racing, and to use putolin 15/50 semi-synthetic.

I'm sure motogp bikes will be on fully synthetic same as every F1 car, still they don't have to cope with 53 bhp.