Posted: Mon Sep 06, 2010 4:43 pm Post subject: Would like to flush my antifreeze but got some ??S
Ok i want to flush my cooling system and heres some questions
1 Cant find the damn drain plug on my 3.8 everyone is telling me its on the lower right hand side i still cant find it am i blind? (anyone have a pic maybe im just not realizing what the plug looks like)
2 i bought Prestone cooling system flush its a little quart of stuff anyone use this and have good or bad experiences with it?
3 I bought the Dex Cool to refill when the flush is over am i making the right decision or should i go with green....
as always thanks for the help guys.
stock 01 LS
R1 drilled slotted Rotors, ECB redstuff pads Painted calipers GHETTOFAB CAI lol and soon to be Ubend/resonator delete
the drain is on the DRIVER side, so it would be the right side if you're standing in front of the car.
Take the little plastic shield/reflector off by undoing the 5 #10 screws...it will make it a smidgen easier. Then, you'll have to get down on your back and reach up around the frame and you'll feel the p e a c o c k screw (sorry, when I typed the it, it just put *****'s there ) up there on the lower, driver side corner of the radiator. Undo it enough to get the coolant to start draining, but don't take it all the way out or you'll have hell getting it back in. Might need a set of pliers or a large headed, flat screwdriver to loosen it... It's not in the easiest of locations...
It may be easier for you to just take the lower hose off... but the drain plug is there...
I am not a Dex fan, but that's just me
Just make sure you rinse out your overflow bottle real good, and make sure you run water backwards through the radiator so it comes out where the upper hose is attached. This should get most of the rust deposits out of the radiator. You'll probably see a little bit of gunk coming out.
_________________ - 2001 Impala Base - Navy Blue Metallic
- 3800 Series II
RIP 10/23/2010, 191,197 miles - traded on a 2003 Tahoe Z71
awesome but has anyone ever used the prestone flush that i bought because i dont want to mess anything up by using it...
Prestone makes a quality product, but like all chemical flush compounds, it works best by following the directions here
1.With engine off and cool, remove radiator cap.* Drain radiator then close ******.
2.Pour entire contents of Prestone® Super Radiator Flush into radiator and fill with water. For systems larger that 12 quarts, use two bottles.
3.Run engine with heater on highest temperature setting for 10 minutes after reaching normal operating temperature.
4.With engine off and cool, remove radiator cap, drain radiator, and close ******. Refill with water and replace radiator cap to fully closed position. Repeat step #3.
5.Stop engine and allow to cool. Remove radiator cap, drain system and close ******. Add enough recommended coolant to achieve a 50-70% concentration. Top off radiator with water. Replace radiator cap to fully closed position. Run engine for 20 minutes to mix coolant/water.
6.If equipped with a non-pressurized coolant reservoir, rinse, drain, and refill with a 50-70% solution of the coolant and water.
* The cap on newer vehicles may be located on a remote, pressurized overflow reservoir. Follow instructions given for radiators, but add product and coolant to reservoir. Much longer running time may be needed to introduce product into system.
Before adding coolant, I recommend disconnecting the return hose from the heater core, removing the radiator cap and backflushing the system through the heater core using your garden hose until you get clear water from all openings... ...Ben
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