Talking about filters.
Last week I took of the oil pan of my 235.
When I assembled it about 2 years ago I thought it would be a good idea to put 15 extreme strong mini neodym magnets all over the inside of the pan.
You won`t belive how much they catched.
They look like 15 little hedgehogs sitting in the pan.
Though the bearings and the rings show no wear at all (after 2 years)I was surprised how much metal dust my little friends collected.
I have to say that this engine was drilled for fullflow with a modern filter (spin on conversion) and had regular filter and oil changes.
The Toilet Paper bypass filter on the other 235 seemed to filter much better, since I have the same magnets in the oilpan and what they collected is minimal but still enough to put them in every engine I have.
Frank
and, NO I don`t sale TP filters
