coaster wrote:IaninDorset wrote:It is a bone of contention and many schools of thought and opinion on this issue, I did remember seeing a quite good article pointing out that a standard Lambretta or Vespa engine really wasn't designed to take synthetics as the oils are thinner and don't stick to the liners and bearings well enough on a standard engine as well enough as a good mineral oil wouldcoaster wrote:Andyf wrote:....is semi-synth deemed thick enough?
It has nothing to do with viscosity,
Viscosity = thickness of the oil and it doesn't make any difference to it's ability to lubricate, it gets heavily diluted by petrol after all
"thinner" v "thickness". I think I get it.
acknowledging that it doesn't make financial sense, is there any detriment to using Synthetic in a standard or mildly-tuned engine?
it may be a silly question but..............is it only composite post-mix that coats the components or is there an element of separation as the heavier/stickier particles hit the metal surfaces?