Thanks TC for the link and the cool history lesson!
3Phase, thanks for the battery tip. I checked battery case temp and it stayed room temp the entire time.
For the oil, what you say is all true in one context or another at one time or another. I am not concerned about cold startups with good oil over the course of the winter for the handful of times I ride the bikes. Have always run 15W40 or 20W50 in the ZRX and XS. Today's 15W40 certainly will flow and even 20W50 will work in an otherwise healthy engine at 32 deg F with margin to spare.
The scenario you bring up is the WORST imaginable, 32 deg F isn't gonna do that with 10w40. In any case, I am running a 10W-40 in the ZRX for the continued break-in of pistons/rings and bores because I feel that will facilitate what I am doing vs using a 15w40 or 20w50 that I typically run.
3Phase, thanks for the battery tip. I checked battery case temp and it stayed room temp the entire time.
For the oil, what you say is all true in one context or another at one time or another. I am not concerned about cold startups with good oil over the course of the winter for the handful of times I ride the bikes. Have always run 15W40 or 20W50 in the ZRX and XS. Today's 15W40 certainly will flow and even 20W50 will work in an otherwise healthy engine at 32 deg F with margin to spare.
The scenario you bring up is the WORST imaginable, 32 deg F isn't gonna do that with 10w40. In any case, I am running a 10W-40 in the ZRX for the continued break-in of pistons/rings and bores because I feel that will facilitate what I am doing vs using a 15w40 or 20w50 that I typically run.
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