14-08-13, 10:08 AM
(13-08-13, 07:20 PM)Capt link Wrote: I used to get some fully synthetic stuff called Amsoil MCF from Opei, supposed to be the best. The old girl went through a litre roughly every 1000 miles. Bike had done approx 10K so switched back to Yamalube semi, doesn't use anything now.
Semi synth and mineral oils leave a bit of gunk residue, so it creates a sort of a seal. That's probably why the bike doesn't consume any more oil. It does not mean the engine is better protected, or fixed. On the contrary.
Heard many people putting heavy (20w50) mineral oil in order to fix the engine oil consumption. Sounds like painting a rotten metal fuel tank without previously removing the rust.
Though most oils are decent and as long as they are changed in time and the bike is warmed up before riding hard, there should be no problems. Most problems occur from lack of oil, not from mineral, cheaper oil.
Most things done in a hurry need to be done again - patiently.