Time to flush the coolent?

[Rupes]

Car has 30k miles. Anytime I'm driving in the city, my oil temp indicates slightly above the 210 mark. This happens even when driving very conservatively on longer stretches of open road without the AC on. On spirited driving, the temp goes up even higher. I can only get it to show up slightly under the normal 210 mark on extended highway cruising.

So what do I need to do - add more coolant, change the coolant, nothing? Will this be done as part of the condition based service from BMW if I ask them to?

[Grail05]

210? thats normal Bro.. at 30k you dont need it. replace it at 80-100.... and also its not part of BMW service since i believed replacement is at 100k +...

Heres what i do on my car..

i replace

every
Engine Oil 7k
Tranny Oil 30k
Diff Oil 30k
brake Fluid 30k
Steering FLUID 30k
Coolant 70k yes replaced it at 70k but did not need it just wanted it done..

[Rupes]

Originally Posted by Sean05

210? thats normal Bro.. at 30k you dont need it. replace it at 80-100.... and also its not part of BMW service since i believed replacement is at 100k +...

Heres what i do on my car..

i replace

every
Engine Oil 7k
Tranny Oil 30k
Diff Oil 30k
brake Fluid 30k
Steering FLUID 30k
Coolant 70k yes replaced it at 70k but did not need it just wanted it done..

Cool, thanks for the awesome summary. But it's just above 210 not at 210 - still no issue?

[Beemdog]

It sounds like you are only a few degrees higher than where my car runs in 80 degree weather, close enough to call it normal.

The water/coolant temp will generally run flat and stable once the thermostat is fully open, so the oil temperature is more a reflection of engine load and how effectively your oil cooler can dump heat (ambient air temp and air flow are the big influences here). Just as oil temp climbs a bit in stop-and-go traffic due to lack of air flow through the oil cooler, over the miles the cooler can accumulate airflow blockage due to heavy insect hits or other debris. Might be worth a look. I've seen leaves and plastic bags blocking coolers as well. On some cars I've done a medium pressure power wash from the rear face of the cooler to blow out all the junk.

The owner's manual has a section on checking the coolant level. But it seems like you don't have anything abnormal in your description to be concerned about.

[m3ray]

I doubt you need to flush the coolant with that many miles on the clock.

[Grail05]

Originally Posted by Rupes

Cool, thanks for the awesome summary. But it's just above 210 not at 210 - still no issue?

yea im running at 215-220 when i was in Vegas at 110 degrees i sometimes hit that mark here in SOCAL and its only 90Degrees and i replaced mine 10k miles ago..

at 80 im still hitting 210-215 depending how hard i push the car and at normal im down to 200-210 a slight overage in the temp is normal.

when you start over heating you will know so dont worry about it.. just drive it like you stole it.. haha jk but yea no worries at that temp..

[Verify]

Id say change it. Do it once now and know your ok. Just dont fall imto the Evans coolant hype, it actually runs hotter

[gatorfast]

This time of year my oil temp is regularly just last the 210 in the south florida heat.