07-15-2004, 09:04 PM
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#3 (permalink)
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Premium Member
Car: 2005 Chrysler/Dodge 300C/Magnum RT
Join Date: Apr 2004
Member Number: 10
Location: Washington D.C.
Posts: 2,557
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I will be switching to Syn and probably will let the frequency slip from 3k miles to 5k miles between changes. Whichever is on sale - Mobil-1 or Castrol Syntec.
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