[Vwdiesel] Changing Oil on a 2001 Golf

[William J Toensing]

Specifically this is a reply to Sherwin Goff but these questions may be of interest to others. His first question was "What is an oil analyzer& where could I look at one?" My analyzer was made in, as I recall, in Lino Lakes, Minn., a suburb of the Twin Cities. I believe they have since moved to Ohio. I have some info I received from them but don't know where I put it. You could look at mine but you would have to come to Nevada City, Calif. to see it. Mine is an electronic device that measurers the amount of acid buildup in oil. To find out more info you would probably have to do a Google search or you might get some info from Amsoil, Inc in their technical dept. I would suggest you explore the www.amsoil.com  website. You then ask what is an "Amsoil full flow filter as a bi-pass filter". The Model A Ford never offered any type of oil filter as standard or optional equipment. I don't know when oil filters were developed but cars from the 1930s, '40s, & '50s offered as standard or optional equipment. A bi-pass filters just some of the oil whereas a full flow filter filters all of the oil as it is pumped thru the oil pump. Most if not all modern cars have a full flow spin on type of oil filter. Amsoil has developed what they call a dual remote oil filter which has both a full flow spin filter that will filter down to either 4 or 7 microns (don't recall which) & a bypass filter that will filter down to less than one micron. The problem is most modern cars don't have enough room to install them. I might be able to install one in my Dasher & Quantum diesels if I ever get the other issues sorted out. On my Model A, an aftermarket bracket was developed to use  a spin on full flow filter as a bypass filter. The Model A uses a splash type oil system which only develops only 2 to 4 pounds pressure to the main bearings which then flows by gravity into an inter pan with troughs in it for the rods to dip into. Modern cars have a full pressure system that forces oil to the main & rod bearings as well as other parts needing lubrication. Amsoil also makes screw on bi-pass filters that filter down to one micron. I have installed these on my '41 Ford, '54 Hudson, "55 Packard, all of which were designed to use bi-pass filters.  However, their bypass filters were designed to supplement a full flow filter to clean oil down to less than 1 micron. You should be able to look at the various filters on Amsoil's website. If you should see some Amsoil product you want, you can order them direct from the factory on their website using my dealer number which is ZO#2185. Amsoil makes a special synthetic that meets the VW TDI's specific specifications, to satisfy VW's specific requirements. Why this specific oil works better than Amsoil's other synthetic oils, I don't know.
Bill Toensing, Nevada City, CA