In Reply to: Re: Thermostat--71c,75c, or 80c ? posted by ron on January 03, 2000 at 14:55:40:
: : Ron,
: : When I first got the car,the temp was reading at approx the 1/4 mark,which to me,is running a wee bit to cool.Removed the thermostat and found that it was fitted with the 71'C range unit.
: : Bought an 80'C thermostat and fitted it.Now the gauge reads just a tad below the mid mark,which leaves me very pleased that I had it changed.
: : Did an oil change a month back and used Mobil 1 and immediately after,the temp reads a needle width below the mid mark during cruise and a tad below mid mark at idle and during traffic.I am now a Mobil 1 believer.
: : moots '90 520i
: thanks moots, guess i'll look for the old t-stat in the trash can and see what temp it was--then try bleeding it AGAIN, good point about the oil change, i'm overdue ! Did you run into any leaks using Mobil 1? I've heard it's great stuff if used in the engine from the start, but switching over after 100k can lead to gasket leaks--just a myth?
I used mobil 1 15w50 in my 85 535 I starting at 127k and still using it at 185k. no problems at all. I plan to put it in my 90 535i when its due for an oil change. Check your oil pan bolts, they do have a tendency to loosen over time.