AMSOIL 10W-40 or 20W-50?
06-02-2003, 10:38 AM
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Location: Mill Creek, WA
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Car: 89 GTA
Engine: L98
Transmission: 700R4
AMSOIL 10W-40 or 20W-50?
I'm aiming to get an oil change sometime this month, and I've got ready access to a dealer that can get me AMSOIL products. I'm debating as to what grade of oil I should use.
I want the car to be balanced and ready to endure any situation my environment can throw at it at the drop of a hat, whether it be stop and go, trademark Seattle traffic, the occasional stop light race, whatever. Will 10W-40 suffice, or should I go with 20W-50?
I will use their engine flush product prior to the oil change, and will use their oil filter.
Car's in the sig.
Thanks for any help you can provide!
Jason
I want the car to be balanced and ready to endure any situation my environment can throw at it at the drop of a hat, whether it be stop and go, trademark Seattle traffic, the occasional stop light race, whatever. Will 10W-40 suffice, or should I go with 20W-50?
I will use their engine flush product prior to the oil change, and will use their oil filter.
Car's in the sig.
Thanks for any help you can provide!
Jason
06-04-2003, 09:02 AM
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Car: 1982 Z28
Engine: LS1
Transmission: T56
I've been using Amsoil 10W-30 on the street year-round, and their 15W-40 on the track. Generally speaking, smaller spread in viscosity is better...less whacko molecule design to coil and uncoil as temps vary, therefore more resistant to shearing.
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