Head Gasket - Ran in 2nd Gear & Temp Went Down?
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Northstar Engines and System Technical Discussion Discussion, Head Gasket - Ran in 2nd Gear & Temp Went Down? in Cadillac Engine Technical Discussion; I test drove a 2003 SLS last night and ran it in 2nd gear at 75 mph for roughly 5 ...
  1. #1
    mr_mr11 is offline Cadillac Owners Member
    Automobile(s): 2003 Cadillac SLS
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    Head Gasket - Ran in 2nd Gear & Temp Went Down?

    I test drove a 2003 SLS last night and ran it in 2nd gear at 75 mph for roughly 5 miles and the temp gauge actually went down about 2-3 degrees rather staying constant or going up. Keep in mind that it was about 8 degrees above 0 last night here in Illinois. Is my thinking correct that since the engine was running at a higher rpm that the water pump was pumping more coolant through the engine, thereby lowering the engine temperature, and hence the head gaskets are probably ok? Thanks for any comments.

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: Head Gasket - Ran in 2nd Gear & Temp Went Down?

    Yes.

  4. #3
    eyekandyboats.inc's Avatar
    eyekandyboats.inc is offline Cadillac Owners Connoisseur
    Automobile(s): 2001 DTS(140K), 2000 ETC(284K), 1990 allante( 80K)
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    Re: Head Gasket - Ran in 2nd Gear & Temp Went Down?

    its very cold up here.. closer to 4F and my car will run colder then i should.. with WOT it will drop down on the temp gauge.

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