Not yet as I have no engine, but definitely will install one with the
engine. Not so much to allow longer change intervals but to keep the
oil in the engine in better condition. Transmission and engine are the
two components in a vehicle that I dont want to open. Pretty much
everything else I can fix myself.

I am thinking of a small electric auxiliary oil pump for this, so that
I dont need to interfere engines own oil circulation at all. If it
brakes at some point, I can just take it off and plug the extra pipes
until I fix it.

And yes its diesel. I had a rare japanese diesel car with 2 oil
filters in factory installation: one before the engine and another
after the engine. Dont remember if they were similar, but my
impression is that neither of them were bypass filters, both had
valves and all the oil went through them. That engine took 3 car
bodies to their rusty graves and is still tight as a new one.

On Mon, Sep 28, 2009 at 2:49 PM, William Greenamyer
<greenamyer@yahoo.com> wrote:
> Anyone still using a bypass oil filter on their van?
>
> William
>