When to do an oil change

dad · 01-06-2010, 03:07 PM

Quote:

Originally Posted by frost

You can also switch back to conventional oil from synthetic.

I don't think you can do that!

From the maintenance car bibles:•If you do decide to change, only go up the scale. If you've been running around on synthetic, don't change down to a mineral-based oil - your engine might not be able to cope with the degradation in lubrication.

frost · 01-06-2010, 10:05 PM

Quote:

Originally Posted by dad

I don't think you can do that!

From the maintenance car bibles:•If you do decide to change, only go up the scale. If you've been running around on synthetic, don't change down to a mineral-based oil - your engine might not be able to cope with the degradation in lubrication.

I'm not sure I buy in, sounds like a rumor the oil companies spread to keep us buying expensive oil

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