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**hatzie** · 06-19-2022, 11:23 AM

I would change the spin-on filter and de-fuzz the magnet every other engine oil change. I do with my Magnefine on my 4L80E and my 4T65E-HD on that interval.
It won't hurt a thing and that filter really isn't super expensive or difficult to service. The $12 Allison filter is lots cheaper than the Magnefine inline filter.

The magnet recess in a small spin-on hydraulic filter along with the reasonable price gives me thoughts about machining a filter base for the Allison/Saturn spin on filters to install one of them in transmission cooler return lines rather than using the inline filters.

You're already under there to do the engine oil so it's not a big deal. Wipe off the ring magnet and put it back with the new filter and top off the fluid with the couple oz you wasted from the filter or just pre-fill the filter with ATF.

06-19-2022, 11:23 AM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,920	Re: 2001 Allison 5-spd Auto maintenance question I would change the spin-on filter and de-fuzz the magnet every other engine oil change. I do with my Magnefine on my 4L80E and my 4T65E-HD on that interval. It won't hurt a thing and that filter really isn't super expensive or difficult to service. The $12 Allison filter is lots cheaper than the Magnefine inline filter. The magnet recess in a small spin-on hydraulic filter along with the reasonable price gives me thoughts about machining a filter base for the Allison/Saturn spin on filters to install one of them in transmission cooler return lines rather than using the inline filters. You're already under there to do the engine oil so it's not a big deal. Wipe off the ring magnet and put it back with the new filter and top off the fluid with the couple oz you wasted from the filter or just pre-fill the filter with ATF. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.