Coolant Flush, radiator drain plug or bleeder screw?

Styral · 11-20-2016, 10:10 AM

I plan on doing a coolant drain and refill before winter starts rolling in full force.

Since I am not doing a complete flush, which plug do I need? After searching DIYs I wasn't able to come to a straight answer.

Do I need both a new radiator drain plug and bleeder screw when just doing a drain and refill?

https://www.ecstuning.com/b-ecs-part.../013197ecs01a/

https://www.ecstuning.com/b-ecs-part.../003530ecs01a/

I've been using the DIYs here religiously, but the coolant DIY pictures are no longer active

dparm · 11-20-2016, 10:34 AM

I'd get both just in case one of them gets chewed up or looks sketchy. The plastic stuff can get brittle and warped from the constant heat cycling.

ec_E92 · 11-26-2016, 08:08 PM

+1 on just getting both. I upgraded to the brass bleeder screw when I did coolant flush and my radiator drain plug "head" (the Phillips cross) got chewed up with removal and reinstall. Hard to find a large enough screwdriver to not chew up the plastic. Upgrade to the aluminum and never have to replace again.

11-20-2016, 10:10 AM	#1
Styral New Member 21 Rep 29 Posts Drives: 2008 M3 AW Manual Join Date: Sep 2016 Location: Paducah, Kentucky iTrader: (0)	Coolant Flush, radiator drain plug or bleeder screw? I plan on doing a coolant drain and refill before winter starts rolling in full force. Since I am not doing a complete flush, which plug do I need? After searching DIYs I wasn't able to come to a straight answer. Do I need both a new radiator drain plug and bleeder screw when just doing a drain and refill? https://www.ecstuning.com/b-ecs-part.../013197ecs01a/ https://www.ecstuning.com/b-ecs-part.../003530ecs01a/ I've been using the DIYs here religiously, but the coolant DIY pictures are no longer active
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11-20-2016, 10:34 AM	#2
dparm Stop the hate, get a V8 3850 Rep 8,625 Posts Drives: C7 Corvette GS, AMG C63 S Join Date: Jun 2013 Location: Frisco, TX iTrader: (1)	I'd get both just in case one of them gets chewed up or looks sketchy. The plastic stuff can get brittle and warped from the constant heat cycling. __________________ Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan Past: 2011.5 M3 sedan ZCP
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11-26-2016, 08:08 PM	#3
ec_E92 Enginerd 118 Rep 542 Posts Drives: E92M3,E36M3,957GTS,E39M5S2 Join Date: Oct 2010 Location: cbus, oh iTrader: (1)	+1 on just getting both. I upgraded to the brass bleeder screw when I did coolant flush and my radiator drain plug "head" (the Phillips cross) got chewed up with removal and reinstall. Hard to find a large enough screwdriver to not chew up the plastic. Upgrade to the aluminum and never have to replace again. __________________ 2008 E92 AW 6MT /// 120k orig rod bearings
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