AC Delco 44 and 46 filters
Just changed my oil for the first time in a 99 Z. I used Mobil 1 Syn 5w30 and an AC Delco Duraguard filter. Just got my shop manuals and it says use an AC (PH? I can't remember the alphas as I write this) "44", but in the parts store catalog it was a "46". I bought the AC Delco 46 and it seems to be correct. Fit fine, no leaks. Just curious if the 44 is OEM (Chevy dealers) and 46 is aftermarket stores.
Does anyone know the difference between the 44 and 46 and if it is anything with some filter upgrade or what? I certainly realize the correct filter has to be used, but the Auto Zone book did say a 46 for a 1999 5.7 Camaro.
Just curious.
John
P.S. It is SO much easier to change the oil on the LS1 than a 94 4.6 Thunderbird!!! I think Ford put in overtime to make that oil filter as difficult as possible to deal with.