When changing to Syn oil....
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From: Dumfries, Virginia Member: #6887
I switched my 95 over at 150K. I'm at 208,400 now without any issues. Mobil One with A/C Delco filters. I did run Castrol Syntech the first few times when I did the switch, I didn't have any issues with it either, I just decided to go with Mobil One instead. I wouldn't hesitate for * minute if that was my car.
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From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
When I still had my bonnes......the 95 I switched to full syn at about 201K without any issuses.....Car still run'* today. Best thing is if you have a high mile car, make sure you run a good synthetic like Mobil 1, or better yet, AmsOil....Amsoil I run in my dieseland with the filter I use I'm at a severe service change interval of 15K, normal service would be about 25K per lube/filter change 
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