Originally Posted By: tig1
Originally Posted By: 440Magnum
Fram Ultra is a wire-backed synthetic media filter. M1 is just a semi-syn non-backed filter. I'd go with the Ultra since the price is similar.
But the Ultra appears to have far less pleats.
Its two different designs. The Ultra has 2 thick layers of synthetic media with a screen for support. The M1 is 1 layer of resin paper. The Ultra relies on its thickness, the M1 relies on surface length ( more pleats, more surface area which also provide support).
You're a synthetic oil user going back decades, but you won't use a synthetic filter.. why tig, why?
Originally Posted By: 440Magnum
Fram Ultra is a wire-backed synthetic media filter. M1 is just a semi-syn non-backed filter. I'd go with the Ultra since the price is similar.
But the Ultra appears to have far less pleats.
Its two different designs. The Ultra has 2 thick layers of synthetic media with a screen for support. The M1 is 1 layer of resin paper. The Ultra relies on its thickness, the M1 relies on surface length ( more pleats, more surface area which also provide support).
You're a synthetic oil user going back decades, but you won't use a synthetic filter.. why tig, why?