Thanks for input.

The original and previous calipers were ATE and the parts store ordered them from the factory on CA.

They are changing suppliers and are assuming the additional cost of the third caliper. The fluid flow is great. Iget myvac pump out and it doesn't take muck time at all. I am cycling about a quart of fluid each time I replaced the caliper.

The pads came from a different supplier which I have never had a problem with.

What kind of problems with brake lines would cause a caliper to leak?

Half the fun is just trouble shooting.

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Current:
2005 Dodge 2500
1999 Chevy Venture

Previous:
1977 240D
1977 300D
1982 240D
1982 300 TD
1984 300 TD
1990 190E