The squeeling is almost continually, it comes and goes like it doesn't get oil sometimes. I just purchased the car in Feb. and it started after I drove away with it so who knows. I asked the person I bought it from and they said they never noticed although it's quite loud, however the former owner was female. it happenes even when I have driven it a while and pull in the driveway and it will squeel, so it's had a while to get lubrication. Interesting though, I just changed oil 3 days ago and it hasn't done it since. The last oil I put in it (before this oil change) was 5w-30 synthetic. I don't know what was before I got it although it was just changed. This time I put Valvoline 5w-30. To answer your ?, it happens hot or cold, engine or ambient temp. At first I thought it was a belt squeeling. It's really hard to check the oil, there never seems to be a difintive line,anyway, thanks for any help.