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Old 11-25-2001, 10:54 AM   #1
doobie
Scooby Specialist
 
Member#: 6570
Join Date: May 2001
Chapter/Region: South East
Location: Dunedin, FL
Vehicle:
04 WRXSW
9.3 TRB0 CNV

Default Cold weather octane rating?

Does anyone subscribe to this methodolgy:

Hot weather = high octane to prevent retardation of firing (anti-knock)

Cold weather = lower octane engine less likely to knock due to low temps.

From what I'm told you can switch to either 89 or 87 in cooler weather and not worry about loss of engine performance. Wy less than scientific tests seem to back this info up.

Any input? Thanks!
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