E34 525 thermostat question

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   Hi All,
Need to change the thermostat on my 525i, is it straight foward? do I need to drain the rad (had a new rad before I bought it).  What coolant/anti-freeze should I use?
Cheers

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Bryce Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 20-February-2005 Location: Farnborough, Hampshire Status: Offline Points: 99	Topic: E34 525 thermostat question Posted: 23-June-2005 at 06:37
	Hi All, Need to change the thermostat on my 525i, is it straight foward? do I need to drain the rad (had a new rad before I bought it). What coolant/anti-freeze should I use? Cheers
	Bryce, Volvo FL614/Saxon (1996)(HFRS). BMW 525i SE touring (1992) Kawasaki ZX6R F1 (1995)

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Peter Fenwick Members Profile Send Private Message Find Members Posts Add to Buddy List Bavarian-Board Contributor Joined: 27-August-2003 Location: Lost somewhere in time... Status: Offline Points: 6484	Posted: 23-June-2005 at 07:29
	Assuming your car has the M50 24valve engine then I would have thought you could get away with not draining the coolant. I simply removed mine replaced it, let any air out through the bleed screw on the radiator then topped up the coolant level in the expansion tank. I then checked the levl every day for the next few weeks although I don't think it needed any more coolant adding. I collected the coolant I had lost and put it back in making up any losses with water. The cooling system has quite a large capacity so adding about 1/2 litre of water won't make much difference.
	Entering an age of Austerity and now driving a Focus Diesel.