is 70 miles a day too much ?

[Slaninar]

Years ago engines werent machined to such close tolerances and the lubricants were less "sophisticated". Running in was a long drawn out process, valves needed grinding & cylinder heads had to be decarbonised fairly often. I would consider it very strange if any properly serviced modern car/bike engine didnt go round the clock at least once. Was talking to a mechanic friend & he was saying that running in is still important but the main thing was to avoid loading/straining the engine & avoid over-revving in first few hundred miles. REGULAr oil & filter changes using the makers recommended grade of oil for local conditions. The greatest wear occurs on start up before the oil is up to temp & circulating & the best advice with modern vehicles is to drive straight off but avoid putting the engine under excessive stress -at least let the motor reach operating temp. There is a lot of rubbish talked about oils Its the SAE/JASO spec & viscosity rating that counts-forget the packaging & marketing hype & be suspicious of claims that the oil is good for 20,000milesetc. One of the worst things to do to any bike/car fitted with manual choke is to leave it warming up with choke out. The excess fuel just washes all the lubricant off the cylinder walls leading to premature wear :eek

All true. Except that not all oils are the same. Not even every petrol. Sometimes differences are so vast you can feel it. Gearbox behaviour, etc.

Anyway, I heard that ester oils (motul semi and full synth) offer better cold start protection. Molecules stick on the cylinder sides longer, providing wear protection. The only time I tried to go cheap on oil made the engine bust. Extremely unlucky set of circumstances, but I've never went for anything but quality full synth ever since and have had no problems at al. Woud I be trouble free with dyno oil as well? Probably, but 10e difference per oil change is not worth my peace of mind.



70 mile round trip shoud be no problem for the machine. What you should worry about is YOU. Will you be rested, concentrated? Riding a bike is nice, but also more challenging than driving a car. One second of absentmindedness and you're in a ditch. Be careful, enjoy. Fazer is the last thing you should worry about.