Hey Guys,
Driving around town yesterday running errands, saw the oil temp swing past the halfway point (210 F) for the first time. It has been unusually hot and humid here...car indicated 99F, but probably more like mid 80's, the car was heat soaked getting turned off and on a couple times in a short period, but it still made me take notice considering how gently I was driving.
I know I was no where near danger, and it did return to normal after a few moments, just got me thinking about what things would look like if I was driving hard. In my mind, any stock M car should be able to knock out laps at Willow Springs in the middle of summer with the AC on, with no issues. Is this wishful thinking? At what point should I be concerned, and for those who have tracked their cars on a hot day, what kind of temps did you see?
Thanks,
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Omid
02 Sterling Gray/Black M5
Manhattan Beach, CA
you will find more data points with a search, but yes, my oil temp is a bit past 210F much of the time when the weather is nice or warm.
Track with the ac on, you'll be on the side of the track after 2-3 laps. I rode with someone who kept his ac on at a track day once in the summer because it was hot, after a couple laps (if that) "bong" "engine temperature" coolant in the red, oil at 300.
On a hot track day, without the ac, you will eventually have to back off or overheat. a few good laps, oil temp starts creeping up, coolant temp to follow. Only solution out there is the dinan oil cooler, but for the money (around $4k installed), i'll just short shift, back off, and let it cool down as needed.
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Mike
00 M5 Ti Silver; Imola/black sportiv
Engine:
Supersprint Headers, Dinan CAI kit and MAFS, Throttle Bodies, Cams, Ported heads, Exhaust, Custom dinan software, Evosport Pullies, Dinan clutch and lightened flywheel; Ignition solutions plasma coils
Suspension:
Dinan Stage 3 with front and rear Strut Tower Braces, Beastpower Sway bar brackets, Dinan Wheels with 275/285 PilotSport, X5 Thrust arm bushings, Stoptech 355mm 4 piston front, 355mm 2 piston rear brake kit, Dinan 3.45 diff
Interior/Misc:
Eurodash, updated steering wheel, Bluetooth retrofit, Sirius Retrofit, hardwired V1, Widescreen Mk4 nav, M audio retrofit, Ice Link, BSW Stage 1 speaker upgrade, bmw towbar
91 M5 Alpine White II, Silver Gray 3/90 production
17x8/17x9 Turbines with PS2, 20mm touring roll bar; Fahey Suspension with SLS elimination; EAT Chip, CD43; work in progress
Last edited by mottati; 25th October 2007 at 23:35.
Last year, I was driving in Nevada ... about 1:00 to 1:30 PM. Traveling over 100 MPH, long steady uphill stretch, A/C on, and the outside temp was 117 degrees. Really!
Oil temp never got over 210 ... I was impressed.
I find it usually goes higher when puttering around in traffic ... when out on the road, it rarely gets over 190.
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"The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge."
My car is identical to yours ... same year and color ... I use the oil listed on the radiator shroud ... BMW Syn 5w-30. It's got 65,000 miles on it. Uses a quart every 4,000 miles.
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"The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge."
My car is identical to yours ... same year and color ... I use the oil listed on the radiator shroud ... BMW Syn 5w-30. It's got 65,000 miles on it. Uses a quart every 4,000 miles.
Nice car!
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2003 M5 Sterling Gray
Dinan 3.45 differential
TMS Shark Injector - 91 Octane tune
IATS Relocation - Inside Air box
Strong Strut front brace
TC Design rear swaybar brackets
Bluetooth
V1
Aux port
Linear Mode
