J - I like to change out the TP in mine at 2 or 3 thousand miles, depending on how the truck has been used - it takes a quart of makeup oil to replace what the element absorbs.
Naturally, the larger the size of the element, the better your filtering SHOULD be - but placement of the filter gets to be more of a problem due to size - and changing the single element a bit more often if necessary isn't a big deal.
The case on mine as pictured, is plain stainless steel... The fitting shown by Wayne is a good deal - I want to eventually get one for mine, just haven't done it yet.
Naturally, the larger the size of the element, the better your filtering SHOULD be - but placement of the filter gets to be more of a problem due to size - and changing the single element a bit more often if necessary isn't a big deal.
The case on mine as pictured, is plain stainless steel... The fitting shown by Wayne is a good deal - I want to eventually get one for mine, just haven't done it yet.