Yes, change the filter with each oil change.
Some of the filter makers claim that their filters have some sort of
acid neutralising additive in the paper. Maybe so, maybe no. Paper
filters would tend to absorb and hold the water and anti-freeze mix. You
want to get all of the stuff out of the engine.
Even after you have changed it twice, watch for a cafe-au-lait colored
cream on the oil. If you find that, there is still coolant in the water.
Here's an example of bad advice from the past--the TD Drivers Handbook
advises to change the oil at ...whatever interval..., but tells us to
rinse the filter in solvent at alternate changes. Now we realise that
was terrible advice, since doing that would loosen most of the abrasive
particles, but there is no assurance that they would all be got rid of.
Thus a large part of the grit would be freed to circulate through the
On Fri, 12 Sep 1997 00:21:01 -0400 Nory@webtv.net (Nory) writes:
>Thanks to all who responded to my question. I received a number of
>different opinions and have decided to be on the safe side and go with
>the majority opinion: Replace the oil twice - first cold, then hot.
>Oil is cheap enough. I think I can afford a few extra quarts. I'm
>wondering now if I should change oil filters twice. (?)
>Don't assume that because you have found one problem, you have found
> '74 Midget & '71 parts car
> '94 Ford Ranger
> '86 Ford Escort
> '89 Ford Probe
> '96 North American Shepherd