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Thread: 5w-20?
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08-04-2007, 12:01 PM #1Don't Listen to Me
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White- 1998 Trans Am
5w-20?
so i got my oil changed today at a new place and the guy insisted that i go with 5w-20 (i use a synthetic blend, i feel its a good compromise since i don't have the $$$ for the all out synthetic!) before i'd always used either 5 or 10 w-30...is this guy crazy?
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08-04-2007, 12:03 PM #2no more 4th gen
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Pewter- 2000 z28
yep he's crazy.
Originally Posted by NE98LS1
10w30 ftw.
or 5w30 if anything...
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08-05-2007, 12:24 PM #3Member
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blue- 2002 WS6 Trans Am
Crazy is a good description. 20 weight is too thin for these motors.
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08-05-2007, 02:00 PM #4Grand Imperial Wizard
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- Retired Outlaw Sum Bitch
Too thin and not recommended by GM. 5-30 or 10-30. Have it changed ASAP.
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08-05-2007, 07:44 PM #5Retired NOT tired
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SOM- 2001 Z28 (Sara)
5W-20 is used mostly in Ford and Honda products, the Honda for the close tolerances in the engine, Ford for meeting the MPG average mandated by the Federal Government, the thinner oil has less friction, so better gas milage.
5W-20 should not be used in the LS1 motor.
SteveC
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