14-08-13, 07:13 PM
Quote: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.
Your problem was probably that the bike had only done 6000 miles and was not yet fully scrubbed in. You did the right thing in switching back to a semi synthetic and fortunately for you no harm was done.
Apparently bikes run from new on top notch fully synth often don't bed in and burn oil. Turns some bikes into permanent oil burners, other folks claim they have chucked some cheap and nasty mineral oil in, given the bike plenty of abuse for a couple of thousand miles, switched back to semi and all was well again.
The late Kevin Ash on running in - http://www.ashonbikes.com/content/running
From the infamous oil thread :lol
Quote:Peter Brett in that article from Castrol oils;
QuotePeter Brett says that they’ve discovered synthetic oils actually interfere with running in, for reasons which go beyond their low friction properties - there also seems to be a chemical process happening which hinders it. “Although you can treat an engine as fully run in after 500 miles, surface stabilisation continues for at least the first 5,000 miles of an engine’s life,” he says. “Synthetic oils actively prevent this from happening, and not simply by holding friction surfaces apart, although we still don’t know exactly why and how this happens. But there’s no doubt they inhibit the process itself. So the consequence of using a synthetic too early is your engine will never run in properly. I would even suggest waiting until 10,000 miles (16,000km) before using it in most engines subjected to normal use. Until then, you’re best to use an inexpensive but branded mineral oil.”