Club 80-90 Forums

I posted this up on somebody's thread years ago and can never find it so here it is with a name that can be found easily.

R0B wrote:Does the smaller oil filter you have to use when fitting the speed shop one to a 2.1 make any difference? If not, then what is the point of the bigger one?

I wondered this ( as I was consiering buying one) and so I tested one on my tintop recently which has good oil pressure

A fresh W712/52 filter showed about 0.5 bar lower than a 6 month old standard filter at 80 degrees and 2000 rpm, by the time the oil got to 100 the difference was less maybe 0.2 bar down.

I'd say you would not want to let the smaller filter get old and clogged but a fresh one is OK I think if you have good oil pressure.

I would be concerned about using 20W50 and if I had poor oil pressure



standard filter ( 6 months old)
2k 80
P1100039 80 deg oil pressure std filter by Paul_Barr, on Flickr
2k 100
P1100055 100 deg oil pressure standard filter by Paul_Barr, on Flickr
idle 100
P1100057 100 deg oil pressure idle standard filter by Paul_Barr, on Flickr


A fresh W712/52 filter

2k 80
P1100103 80 degree oil pressure 71252 filter by Paul_Barr, on Flickr

2k 100
P1100110 100 deg oil pressure 71252 filter by Paul_Barr, on Flickr

idle 100
P1100111 100 degree oil pressure idle 71252 filter by Paul_Barr, on Flickr

bypass pressure behaviour is also different according to the Mann specifications

Is there a better small filter than the 712 and what is the best oil in regards to pressure

I remembered CJH did some homework on this and posted the results, and somehow Tapatalk search found it. http://forum.club8090.co.uk/viewtopic.p ... 9#p8231159" onclick="window.open(this.href);return false;
I know I've been using the Mahle equivalent for some time, but couldn't remember the part number OTTOMH, and my stock's in storage 300 miles away.

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Found it.

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All good info chaps, keep it coming

Thanks for the quick reply read the post from CJH so have ordered a W713 filter as I also have a oil cooler take off plate fitted have been running on 22/50 mineral oil since I put the recon engine in about three years ago has always had low oil pressure but not low enough to set the buzzer of doom off. Thanks

Personally I can't see why Speedshop don't acknoledge the smaller filter is a compromise and change their design.