Is 5W20 oil too thin for the GTO? - Pontiac GTO Forum
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post #1 of 7 (permalink) Old 07-16-2012, 08:39 PM Thread Starter
 
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Is 5W20 oil too thin for the GTO?

Reason why I ask this is because I have a jug of Penzoil Ultra 5W20 left from my Charger RT.
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post #2 of 7 (permalink) Old 07-17-2012, 05:53 AM
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What does your owners manual say? Have you read it? Have you read what it says on the oil fill cap?

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post #3 of 7 (permalink) Old 07-17-2012, 06:50 AM
 
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You should use what the car calls for. But to be honest, I doubt it would do any harm.

2003 Corvette Z06 - MGW shifter, Corsa X pipe, Corsa Xtreme exhaust, Texas Speed long tubes w/o cats, PowerStop rotors/pads, Conti DWS tires, C6Z51 F&R sways, C5R headlights, tuned

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post #4 of 7 (permalink) Old 07-17-2012, 09:14 AM
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It's too thin for me. Will it cause your engine to lock up? Very doubtful but for the cost of a new jug of oil. . .

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post #5 of 7 (permalink) Old 07-17-2012, 02:35 PM
 
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Mix it with 40w and that'll average it out.





Yes, I'm kidding.

Current: MGW-p, H-pipe, SS OTRCAI, Lovell rear springs, Eliminator shocks and Pioneer AVH-P3300BT, JBA LTs+catless mids, Drilled/Slotted rotors, Kooks Afterburners, catch can & Tune Next: ??? Wish list: Intake & TB, modest cam, UDP, gears
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post #6 of 7 (permalink) Old 07-18-2012, 10:59 AM Thread Starter
 
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Quote:
Originally Posted by BWinc View Post
Mix it with 40w and that'll average it out.





Yes, I'm kidding.
Better yet, how about some Mrs. Butterworth's syrup. That ought to thicken it up a bit. I hope nobody takes you for serious about mixing it with 40W, lol.
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post #7 of 7 (permalink) Old 07-18-2012, 01:56 PM
 
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Dont do it... 5-30 mobile 1 full synthetic oil only!!!

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