I think I'm thinking this through correctly, but I'll toss it out for comments from the "experts". I'm replacing my dying auxillary fan...making hellacious racket when activated by A/C. Got the fan and now I'm taking out the radiator to put it in...wtf German engineering? Anyway, my car has about 89k mi. Water pump, timing belt were changed at 50k. I was thinking of puttiing in new radiator when I do new water pump, tb, & thermostat at 100k, and using the fancy "no water" formula anti-freeze for the new radiator and not having to flush cooling system for next 50k mi. Since I've got to flush the cooling system now at 89k, should I just go ahead and "do it all" now instead of waiting another 10k mi. In the last 10k mi., I've had new mech. fan, fan clutch, belts, hoses, fan resistor.
I'm leaning towards just flush now and doing major maintenance at 100k.
Also, what do you think of the claims for the "no water" antifreeze: extreme operating temps and 500,000 mi. service. Anyone use this stuff? It costs about $29/gal. at Bavauto. If it keeps me from having to change coolant every couple of years, I'm for it. Also, I've never used the "Water Wetter" product. Do you?
Dodging the tumbleweeds...and roadrunners...and coyotes...but not the rattlesnakes.
1993 325iC Pure stock, uh, except for the MOMO Cobra shift knob.