I was intrigued to read in the following archived article, a reference to the 1972~80 VW Type 1 Super Beetle (i.e. VW 1302S) engine, being factory-fitted with some form of full-flow oil filter!

Phil Ramsey, "Oil Filter Advice", Machinery Lubrication Magazine, November 2004.

http://www.machinerylubricatio...ail.asparticleid=681

« The VW Super Beetle had a full-flow filter after 1972 until production stopped in 1980. There was also a full-flow filter on the 1975 VW sedan and the 1980 VW convertible.

Although some of my books mention the changes in technical specifications from one production year to the next, there is no mention of any full-flow oil filtration being introduced, on any VW Type 1 style engines.

Jerry Sloniger, "The VW Story", Patrick Stephens Ltd., 1980, ISBN 0-85059-441-3.

Clive Prew, "VW Beetle", Grange Books, 1990, ISBN 1-85627-034-3.

I would certainly have expected to see such a thing mentioned in the following book:

Tom Wilson, "How to rebuild Your Volkswagen Air-Cooled Engine", HP Books, 1987, ISBN 0-89586-225-5.

To the best of my knowledge, the only VW Type 1 style engine, which were factory-fitted with any form of full-flow oil filter, were those of the late-model (i.e. circa 1990s), Mexican built VW Beetles, with Bosch Digifant fuel injection, catalytic converter and hydraulic, self-adjusting cam followers, which required properly filtered oil, for which provision was made, using a filter pump (i.e. oil-pump housing, with integral, cast-in, horizontal oil-filter mounting.

Hence, I would be interested to learn more about the VW Super Beetle engines, with factory-fitted oil filters, which Phil Ramsey claims to have seen; particularly the engine number prefix letters and the location of the ouil filter. If this was of a type, radically different from the aforementioned filter pump, it would potentially have been a possible substitute for my 1973 VW 1600 Type 2's, original factory-fitted AD-Series (similar to the North American specification, 1971 VW 1600 Type 2, AE-Series), VW Type 1 style engine, which had no oil-filter provision.

The link which I incorrectly posted for the article, should have been:

Phil Ramsey, "oil Filter Advice", Machinery Lubrication Magazine, November 2004.

http://www.machinerylubricatio...il.asp?articleid=681

There certainly was a development of the air-cooled VW Type 1 Beetle style engine, which had a full-flow oil-filter mount, which was cast as an integral part, of the left-hand half of the engine crankcase, in a similar fashion, to that of the 1983~92 VW 19/2100 Vanagon's water-cooled, spark-ignition (i.e. gasoline or petrol fuelled) flat-four engines. These air-cooled engines (with CT or CZ engine-number prefix), cooled by a crankshaft mounted fan, similar to the VW Type 3 & 4 style, air-cooled engines, were used in the non-North-American specification, 1980~83 VW 1600 Vanagon (i.e. Type 25 or Transporter T3), as discussd at the following links:

http://www.tunacan.net/t4/tech/ct-cz.shtml

http://www.type2.com/library/engineg/boxeng.htm

I also know of one example, where a complete engine assembly of this type, including cover plates and all ancillary components, was directly substituted, into a 1972~79 VW Type 2, as shown at the following link.

http://i275.photobucket.com/al...askeet/CT-engine.jpg

I had a '73 Super Beetle. If memory serves, it had the same screen-in-the-sump setup that my Mom's '57 & '63 and my '64 and 3 different '68s with no factory filter. I added bypass filters on a few of them, more to add an extra pint to the oil capacity than for any actual filtration.