Thanks, all, for the 10 W 40 advice - now, I'm trying to figure out why my 'service engine soon' light is on all the time since the oil change.
I wanted to wait the 4 ignition cycles (?) before complaining, because I've had a few 'one-time' indications and it seems to turn off after the 4 drives, but now I've driven the car 9 times. =(
I wanted to wait the 4 ignition cycles (?) before complaining, because I've had a few 'one-time' indications and it seems to turn off after the 4 drives, but now I've driven the car 9 times. =(