2002 Oldsmobile Silhouette system keeps draining

2002 OLDSMOBILE SILHOUETTE
190,600 MILES • 6 CYL • AWD • AUTOMATIC
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LEELITTLE70
  • MEMBER
  • 1 POST
Unable to sustain coolent levels. Don't see any obvious signs of leak, no smell of coolent. No water in oil. Heat does not come up right away and most times it will stay cool. Eng. sometimes spikes with heat.

I can only come up with is the following possiblities
1 intake
2 cracked head
3 cracked in system- no signs
4 heater coil - note there is a front and back heating system

Any other posiblities -?
Aug 15, 2010 at 10:24 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Losing coolant and there's no external leak-could be burning in the combustion chambers due to headgasket cracked head or block and an intake leak-Get it block and pressure tested.
Aug 15, 2010 at 10:31 PM
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