I decided to go back in time, a time when Fram could actually stamp a leaf spring, for the last year I had been casually looking for the old ultras in 3614 size, but it seems they either are all bought up or command a high price, then I started looking at tough guards, found a few one or two, but cost of shipping didn't make sense to buy them, so I found these slightly longer 8316's, back then the tough guard was their best filter for efficiency, tg's were 99% at 20, the xg was I believe 96%, I found a case of 12 tg8316 from a seller, got not too bad of a deal on them, one didn't pass my qc, it has a dent, think I will cut that one and have a look.
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