Classic/Antique Car Repair: Buick oil filter, oil filter, installation

Question
Good morning, Mr. Benjamin.  I own a 1953 Buick Special, 322 cu. in., V-8.  I need to change the oil but wanted to confirm that I have the correct filter.  I located one source for the oil filter for that particular car but am not sure if it is correct.  They indicate the original manufacturer's part # was CH106PL with the following specs:  height - 6.25", ID - 1.28", OD - 3.69".  Can you confirm that this is correct?  And will I need to replace a gasket when I change the oil?  Thanks.  Tom Fitzpatrick

Answer
That is probably the correct original filter number, however filters have improved tremendously since those days; I strongly advise you to use the NAPA stores premium brand.  These are the highest quality filters on the market these days.

The correct unit for your car is a NAPA-GOLD #1121, which does come with a new gasket. Yes, you need to change the gasket also.  The specifications of the new filter will be

    Item#:  FIL1121

Attributes:
Features & Benefits - 4:20 Micron
Product Features: NAPA Gold Oil Filters Hold 45% More Dirt + Last 30% Longer Than Other Leading Competitive Brands.
Style:Metal Canister Lube Cartridge Filter
Media Type:Cellulose
Height (Inches):6.339"
O.D. (Inches):3.778"
I.D. (Inches):1.095"

While these dimensions are slightly different than the original type filter, it will fit your application, and do a better job of protecting your engine.

These filters are not the common "spin-on" type, which you are probably more familiar with.  These are replaceable cartridge type - contained in a cylindrical housing that you must open and remove the cartridge from, then clean it out carefully to remove the accumulated grit from the inside of the container, then install the new filter cartridge and gasket.  

After doing this, and of course refilling the crankcase with oil, start the engine and let it idle until the oil pressure come up (which will take a few seconds), and then check very carefully for leakage around the seal between the container and the mating sealing surface (where the new gasket is installed).  

This type of filter design is treacherous in that it often leaks prodigiously immediately after installing the new element.   If this happens to you, take it apart again and make sure the gasket is properly seated in the groove, and the lid is on correctly.