i’m pretty sure its the engine as ive listened throughout last winter. I’m using recommedned 5/20 but think its time to change for winter.
I have not checked the pressure and the engine has reliably run temp-wise very well. I’m in nyc and notice when the temp dips below 50 degrees it grinds on starting, but it only just started this way, and we do not have extreme temps .it only happens once after a night of resting in cooler temps, and not on other starts after that.
Im confused because people recommend heavier oil in colder temps but, to me, if its grinding upon start up, maybe lighter oil will circulate easier.
i have not gone as far as an analysis and would hope the wisdom here would supersede any complicated steps.