Oil Change Time!

[Jambo_imp]

Not on my bike...

I've started cars at -7F

At that temp the entire car feels stiff and unhappy.

One of my cars takes 13 quarts- so even on just a reasonably chilly day, not even below freezing takes a LOOOOONG time to heat up, even at highway speed.

The flip side is that once hot- it has a 'residual heat' function that runs the water pumps while the car is parked at say a restaurant or shopping to keep the fluid moving through the block to the heater core, back to the block- while running the climate control inside the car- you come back to a nice toasty car.

If the available heat drops too low, it shuts itself off.

True. You can definitely tell when the car is cold and reluctant to start at such low temperatures. But if we are talking bikes and their oil/filters, I am unlikely to start mine much below 50F. I have been known to ride all the way up until Xmas, where I live in MD, temperature dependent. If it is 40F outside, I am unlikely to ride unless I miss it so much, but then it will be limited to a very short ride to just say I did. Getting older, if the temps now are below 50F, I am uninspired, though I have been known to ride between 40-50F. I get uninspired because of the hassle factor of layering up that much. That means the bike might sit from December to March. BTW, if I think I won't be riding that long, I would be inclined to fill the tank treated with Stabil. Nowadays with $hitty ethanol based fuels, even Stabil does not do the job it used to do, but with fuel injected bikes, they generally start right up if stabilized after three months of sitting. I will also charge the battery on a trickle charger at least once a month since the internal resistance of batteries might discharge it 1%/day. Other than that, I don't feel a need to start it during that time unless it magically warms enough I could take it out.
So with bikes in mind, I am not going to start it below 50F, and claim a bypass is not going to be needed because the oil will never be thick enough for me to need it, at least based on temperature. And since I change oil often, I won't need it based on the filter clogging. Not to offend anyone, I am just saying to me I don't care about the bypass feature in a filter, all IMHO.