Northstar Engine Coolant Flow Diagram This video explains how to check your coolant level and condition of dexcool coolant anti freeze in the cadillac northstar engines. check it when the car is. Northstar engine from '97 seville sts. now at ~100k. "check coolant level" message has appeared twice over the last six months. both times i added coolant immediately: ~1 quart distilled water & 1 quart orange "dexcool" on both occassions to replenish the level. had neither any overheating issues nor any hot temp indications on the temp gauge.
Northstar Engine Coolant Flow Diagram 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. If low speed fans cannot keep the temperature under control, the fans will turn on high speed at 234 degrees f. a few degrees of fluctuation is perfectly normal so an engine temperature of 195 to 238 degrees f is perfectly normal for a northstar and is nothing to be alarmed about. cooling fans come on low speed: 223 degrees f, or 106 degrees c. The main consideration of an all aluminum engine is not the absolute . coolant temps observed but maintaining thermal stability throughout . the engine. keeping the hot spots cool and the cool spots hot . eliminates thermal fatigue of gaskets and seals and allows the . engine to "grow" and "shrink" with coolant temp changes as a single. By mark north. published: aug 1, 2004. the northstar v8 engine family is general motor’s top of the line luxury power plant. introduced in 1993 in the cadillac allante, eldorado and seville sts, the 4.6l 32 valve dual overhead cam all aluminum v8 engine was a quantum leap forward for u.s. automakers. initially rated at 295 horsepower, the.
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