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#1
09-25-2008, 05:11 PM
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Oil viscosity?
2004 Cavalier. Are there any oils thiner than 5w30 (other than 0w30) listed in the owners manual for use in this car, and the temperature ranges for each? Thanks.
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system 
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#3
09-26-2008, 11:56 AM
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Re: Oil viscosity?
Synthetic maybe.
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#4
09-26-2008, 05:07 PM
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Re: Oil viscosity?
5w30 is a good all season motor oil.
If you live in the more southern states, i would probably run 10w30
__________________
Please don't PM me with your J-body Issues. Post appropriately in the forums, and I will toss my opinion in your thread if I have anything to help. - Thanks! 2006 Chevrolet Trailblazer 2010 Glastron GT 205XL
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#5
10-20-2008, 04:25 PM
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Re: Oil viscosity?
Sorry, been AFK for a long time!
I want to run the thinest oil the engineers say I can for best gas mileage. It makes a huge difference, in my truck 15/40 gives me 6 mpg and 10/30 gives me 11.5 mpg highway. If it says 5/20 in the owners manual, why would a "thin" oil not be recomended? What's the temperature range they give? I appreciate you checking for me!
__________________
'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#6
10-20-2008, 06:47 PM
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Re: Oil viscosity?
If you don't keep the pedal to the floor all the time, and don't drive hard, and change it on schedule, you can use thinner oil. It will give you better mileage.
But drive hard with thin oil, and the motor won't last as long.
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