[V6-12v] Oil filters

[The CyberPoet]

Many manufacturers have switched to much longer oil filter intervals -- 
predominantly in other countries -- and it applies only with the OEM 
filter. For example, my Suzuki motorcycle has a filter interval three 
times as long as the oil change interval when using the OEM filters. 
That doesn't mean that the Americans follow this guideline... The 
purpose for this is multifold. For vehicles destined for certain 
countries (Germany & Cyprus for example), the post-use requirement for 
recycling an oil filter makes recovery more expensive than engineering 
a better oil filter.

As for the filter vs. oil concept: change the oil, skip the filter if 
you're tight on funds. Why? because the filter will trap smaller 
particles when it is somewhat dirty, but old oil loses it's viscosity, 
robbing your engine of the protection it needs.

Cheers
=-= Marc


On Thursday, April 21, 2005, at 05:11 PM, Tom Christiansen wrote:

> Folks,
>
> Changed the oil on my 1994 90S today. While in there I took a closer 
> look at the engine to figure out if I had the early AAH or the later 
> (12.94) AAH/AFC hybrid.
>
> Engine type: AAH (11.94 or earlier). No punch marks or recessed lift 
> points on the engine.
>
> Now the question: The Bentley manual claims that the oil filters for 
> the two engine types (AAH and AAH/AFC + AFC) are not interchangeable. 
> Does this mean that the threads are different and, thus, won't fit or 
> that the filters have different characteristics? Which part number is 
> the correct filter for the engine? The p/n I've been using for the 
> past couple of years is 034 115 561A (Mann W719/30)
>
> While changing the filter I noticed that it says "Langzeitfilter - 
> 30000 km - 2 Jahre" (= long life filter - 30000 km - 2 years) on it. 
> Now, 30000 km (~20000 miles) sounds like quite a bit between oil 
> changes. And I've always been told that if you can't afford to change 
> both the oil and the filter, change the filter. What's the deal with 
> these long life filters?? Do you just change the oil every 3000 miles 
> and only replace the filter every 6 oil changes or so? Given that the 
> filter is only $8.50 (granted, that is 2x what a FRAM piece of junk 
> costs) it seems silly to not change the filter if you're in there 
> anyway.
>
> Thanks,
> 	
> 	Tom
>
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