My 99' Deville had head problems as well and would consume radiator coolant. I would advise this type of repair to be performed on a Northstar engines as an extremely short-term fix for short transportation. The late 90's Northstar engines have a design flaw where the headbolt threads are much to fine for the application and therefore strip frequently before the engine reaches the 100k mile mark. A thorough repair would be to (a) replace the head bolts and repair the threading on the block with some helicoils or (b) use larger aftermarket headbolts and enlarge the holes on the block.
@Tom-wq2mz
4 жыл бұрын
I added the entire bottle into the upper radiator hose. Will it hurt anything doing that way far as clogging up the thermostat. Thank you
@swaggyp6982
7 жыл бұрын
I have a 99 Deville myself and I think it has a blown head gasket should it runs hot after about 20 mins and I have to put water in it every time I drive it but I don't see a leak tell me what you think don't everyone speak at once thanks
@frankiesemailfd
5 жыл бұрын
Look back behind the intake manifold on the driver's side, it's called a crossover gasket and unfortunately my POS is leaking there too
@jamesb8305
7 жыл бұрын
That mechanic obviously knows nothing about northstars. It's NOT the head gasket that goes bad, it's the head bolts pulling from shitty GM engineering flaws.
@thomasodetinape4180
4 жыл бұрын
This just in, the only thing thats fixes a blown head gasket, is a new head gasket. No amount of wishing or wanting otherwise will work.🤔
@marcuslegrant450
8 жыл бұрын
how long will it lasts
@Tom-wq2mz
4 жыл бұрын
10.000 miles
@MrShanghai34
7 жыл бұрын
I bought a bottle of Blue devil about a year ago. I never used it. My son needed a vehicle to drive and he used it on my 97 4runner with blown head gasket. He followed the directions and we are driving the 4runner now. No steam, no problems. He didn't even use the whole bottle. I'm going to use the rest on my truck.
@tresaweston9181
2 жыл бұрын
Where are you located? I can use your help...
@thomasodetinape4180
4 жыл бұрын
Join us tomorrow as we install new head gaskets. 🤣🤣🤣🤣🤣
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