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Discussion Starter · #1 ·
Got the 9000 mile change today. The dealer's switched to Castrol Syntec Blend (from Pennzoil). Castrol's brochure seems to indicate 4000 mile change intervals, says it's "as good as sliced bread". Anybody have long-term experience with this stuff or is it too new?
 

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Which engine are you running?
 
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