There is a possibility that it will leak. (the smaller molecules) That being said, I ran 530 synthetic on my 250K mile motor without any problems. I'd use synthetic 10w30 though. Just to be safe...
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Builder/Owner of Badass Panther Wagons
Busy maintaining a fleet of Fords -
ohh geez, its down to the wire.. maybe I will flip a coin..
Thanks alot guys always great information here
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Do this:
Before the oil change drop in some Seafoam. Scott can give you the particulars.
Change the oil and filter :drug:
Any good brand of 10w40 Synth Blend.
Add Lucas Oil stabilizer and hit the road!2008 Mercury Grand Marquis GS Bone Stock
The modern definition of "racist" is "someone who is arguing with a Liberal".--updated Peter Brimelow quote.Comment
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I've run Valvoline's SynPower synthetic oil in my old '89 TC and my current ride (a '90 GM) haven't had any problems.
'90 Mercury Grand Marquis GS
Baseline 5.0L numbers totally stock, 123 rwhp, 239 rwtq
5.4L swap coming soon.Comment
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