Thread: Behr vs Wahler
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Old 01-04-2014, 02:05 AM
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Gregory891 Gregory891 is offline
Join Date: Dec 2011
Location: Switzerland
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Been doing BMW's since the early 80's, BMW has used Behr & Wahler as thermostat OEM's - depends on the car / engine. Either would be brands I have and would use.

If your car takes a rather long time to warm up (gauge, not to make heat inside), it could be the thermostat. Cheap & easy enough to replace, even if it's NOT the case - you haven't spent signficant money and you've proactively replaced something that is of value.

Codes would only be if the late warm up causes an issue with the emissions control or similar.

If the car takes a VERY long time to start making heat - this could indicate a potential issue with the electric heater valve.
2002 Euro X5 (E53) 3.0 diesel (M57)
5 speed manual with UUC short shifter.
Pre-xDrive NV125 transfer case (chain & gears).
Factory Xenon headlights, Spyder LED tail lights
Updated vortex crankcase breather.
Motorsport dead pedal, factory fire extinguisher, factory first aid kit, factory F&R mud flaps, factory PDC

Bilstein B6 shocks F&R
Redline oil has replaced "lifetime" fluids (F&R diff, manual transmission, transfer case and P/S).
Dimple magnetic drain plugs in all compartments.
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