Contour Enthusiasts Group Archives Forums Modifications Zetec Maintenance Synthetic oil???

Originally posted by WestCoastAjax:

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Sounds like the detergent part of your oil is doing its job.
The reason to change oil is not because the oil is used up , its because of the dirt and contamination circulating in the oil.

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Well the oil loses it's viscosity and therefore will not coat the parts very well and yes contamination.But there really shouldn't be that much contamination unless the engine is getting fuel past the piston rings.But some yes is fine.sorry to sound anal but I love my contour to death and can't stand it when she doesn't run good