How To Drain Coolant With The Drain Plug On Northstar General Hi everyone, this weekend i changed the coolant on my northstar, the last time was 2 years ago when i changed coolant when i replaced the alternator, that time i had the radiator out of the car to gain access to the alternator and the draining was done by removing the lower hose on the radiator!. Close up the hose again and refill the system with a 50 50 mix of distilled water and coolant. if your car is a 96 or newer, use a dexcool coolant such as texaco or prestone. if it's a 95 or older, use the green stuff. do not use tap water. there is no need to drain the block of coolant. just drain the radiator and refill as suggested above and.
How To Drain Coolant Where Is The Drain Plug 89553 posts · joined 2004. #2 · apr 5, 2007. you won't get 100% of the coolant out, so if you flush it you won't get 100% of the water out. consequently you'll have a hell of a time trying to get a 50 50 mix. just drain and refill with 50 50 mix of dex & distilled water. reply like. The reason being, the older the car gets, the more likely the drain screw is to break on removal. it should be on the passenger side just above the lower mounting insulator on the vertical portion of the tank if you want to find it. ditto, i should have mentioned when i did my 97 sts,i drained the lower rad. hose. Links below: cadillac northstar engines are known for overheating. this deville had a slow coolant leak & a history of overheating due to a failed water pum. There are no block drain fittings. the best you can do is remove the bottom trim panel and them remove the drain plug from lh side radiator end panel. a 3 4" socket will fit on the radiator drain plug. to get even close to a 100% coolant change will require draining the radiator 2 or 3 or more times.
Northstar Engine Coolant Flow Diagram Drivenheisenberg Links below: cadillac northstar engines are known for overheating. this deville had a slow coolant leak & a history of overheating due to a failed water pum. There are no block drain fittings. the best you can do is remove the bottom trim panel and them remove the drain plug from lh side radiator end panel. a 3 4" socket will fit on the radiator drain plug. to get even close to a 100% coolant change will require draining the radiator 2 or 3 or more times. 4. locate the drain plug and loosen. locate the drain plug. this is found on the bottom of the radiator. place a pan under the drain plug to catch old coolant. loosen the drain plug and allow coolant to flow. tighten the drain plug when coolant has stopped flowing. 5. fill the cooling system with distilled water. This video shows where the radiator drain plug (petcock) is located on a 1997 cadillac deville. fill up the radiator with distilled water and run the engine. turn off the engine and drain the water, fill up the radiator with antifreeze until you have a 50 50 coolant distilled water mixture and burp the system.
How To Drain And Flush Radiator Coolant In Under 30 Minutes 4. locate the drain plug and loosen. locate the drain plug. this is found on the bottom of the radiator. place a pan under the drain plug to catch old coolant. loosen the drain plug and allow coolant to flow. tighten the drain plug when coolant has stopped flowing. 5. fill the cooling system with distilled water. This video shows where the radiator drain plug (petcock) is located on a 1997 cadillac deville. fill up the radiator with distilled water and run the engine. turn off the engine and drain the water, fill up the radiator with antifreeze until you have a 50 50 coolant distilled water mixture and burp the system.
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