Originally Posted By: jesbo
GC has a pretty high TBN and with those low mileage numbers would hold up well in my opinion. I think it depends a lot on how you drive those 1000-2000 km's... If its mostly short trips less than a few miles each including winter driving, then condensation of moisture in the crankcase and fuel dilution can degrade the oil quickly. If your trips are long enough to allow the engine to run to full operating temperature, then contamination will be less of an issue and the oil will hold up much longer. Its always safe to change the oil annually for low mileage use, but you can always resort to an oil analysis after a year and see what its condition truly is.
All true. Although if it's been modified too (he doesn't say, but it's clearly "special interest"), then that may increase the fuel dilution problem even when it isn't cold/idling.
It is a shame to waste the oil. You could always send a UOA away late-fall but before it's too late to change it and see what the TBN and fuel dilution is, I suppose.... (?)
Of course that's $40 right there once you get it shipped from Canada.