[mike]

The following Rennlist thread says that the anti-drainback valve fails after a period of time, thus allowing all oil to drain out of the filter and resulting in dry starts due to lack of prime. I know that there are several here who have made this mod, myself included, and I just wanted to pass along the info FWIW.



http://forums.rennlist.com/rennforums/show...eferrerid=21817



mike dayton

'95 968 M030 Coupe

'91 944S2 Coupe

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[mike]

I forgot to mention that I unscrewed the top off of my filter and found no oil inside. I am planning to replace the Canton filter with a Porsche filter for now.



mike

'95 968 M030 Coupe

'91 944S2 Coupe

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[Jason Judd]

That's pretty scary stuff.



I definately would be concerned.



Jason

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[Tom in Austin]

Bag of downers! I wrote to Canton and sent them the links ... will post their reply for the group

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[Tom in Austin]

Canton says:



I can only read the last post. As far as the drian back valve goes it is a flat rubber disc the same as any OE oil filter. We have not had any customers call in with any problems with the filters or the drain back valves. Our seal kits come with a new anti drain back valve. If changed every few filter changes there will be no problems.





Thank you,

Canton Racing Products

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[mike]

Tom in Austin,



Thanks for writing to Canton. Replacing the drain back valve every few filter changes defeats the main purpose that I bought the product which was to avoid messy oil fiter changes. There is the benefit of the better filtration provided by the Canton filter but I'm not sure that it is necessary considering how often I change oil.



mike

'95 968 M030 Coupe

'91 944S2 Coupe

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[Tom in Austin]

Wrote back to Canton explaining our concerns further and this was their reply:



Our anti-drain back valve is designed and styled up to or better than the standard of most aftermarket oil filters. The OEM filter for your application has a spring to preload the drain back valve. This is not common with OEM and aftermarket filters for most other applications. If you are worrried about a dry start a engine oil pre-luber like our Accusump would be a good idea.





Thank you,

Canton Racing Products

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