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  1. R

    Castrol GTX 10W-40, 5000 miles (blown head gasket)

    This was the first analysis for our 1998 Ford Escort. We took it to our mechanic, and indeedy-do, cylinder #4 was leaking, so we had it fixed. The car has 100 000 miles on it. It had an intermediate oil change after the repair, and this weekend I'm going to put some Castrol Syntec 10W-30 in it...
  2. R

    Castrol Syntec 5W-20, 5100 miles (2004 Ford Focus)

    It came from my 2004 Ford Focus 2.3-L Duratec with 32 000 miles.
  3. R

    2004 Ford Focus, Castrol Syntec 5W-20, 3300 miles

    Here is my first analysis from Blackstone. This change interval was a little over 3000 miles since my cooling fan bought the farm and the engine got a little hot (121°C). I wanted to make sure there were no ill effects, and it's also my first oil change since I got the car 4 months ago. I'm...
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