Oil filters

[Gnasher]

So, are we saying that new Yamaha's come fitted with forged pistons which don't need mating to the cylinder ???


I'd have thought a new engine would at least need semi synth to aid the running in with the mineral oil properties.................or am I stuck in a time warp  :look

Modern say mid 80's on engines are machined to far higher tolerances, also the use of improved and advanced materials and coatings (86 GSXR1100's had teflon coated bores) and semi synth and fully synth oils have all helped increase power, reduce wight, massively increase reliability, reduce wear.  Running an "engine in" is pretty much a waste of time since late 90's, running in by definition is fine machining, which wasn't possible with older materials, machining.  First services are really to check for ancillaries, brakes, hoses, fastenings etc, changing the oil is a formality in fact you now have to pay for it, years back it was free as it had to be done, now it's another way of making money out of you!  Up until say 20 years ago car engines lagged behind bikes, but not any more they're right up there often ahead why, same as above plus emissions and just look at the service. intervals 20k.  Bikes for years were exempt from emission testing at the point of manufacture (they still are at MOT but not for much longer) but not anymore since about 03 which is why the crab Fazer had to go. 


Things have been moving on for some years!!