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Old 03-01-2012, 03:52 AM
awbazar awbazar is offline
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Hello mssj113,
Thank you for the comment on the ZDDP at under 20K. This Buick 3.3L V-6 has 60K and appears to have been taken care of quite well by an old couple.

I suspect that synthetic oil would improve the gas mileage and I'll note any improvement I get from the change to 5W-30 from the 10W-30.
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