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Re: Oil filter analysis

To: "Steve R." <triumphtr6@cox.net>, <spitfires@autox.team.net>
Subject: Re: Oil filter analysis
From: "William Davies" <bill@rarebits4classics.co.uk>
Date: Wed, 15 Jan 2003 09:28:44 -0000
----- Original Message ----- 
From: Steve R. <triumphtr6@cox.net>
> 
> I have seen this article years ago and since then I always check to see
> the rubber valve on the filter. I don't remember if it stated it, but
> for an example: Look at a Fram filter and the Fram Tough Guard filter.
> The  Tough Guard has a 'anti drain back valve", so when you shut the car
> back off, the oil that might be in the process of being clean does not
> drain back into the pan.....well that's what I like to think..but it
> allows the filter to retain oil when your vehicle is turned off so your
> engine benefits from a filter full of oil at startup.

The presence of the rubber valve doesn't necessarily mean it works! I still 
have seven or eight Champion D102s from a batch with non-working valves. I've 
had individual filters from other brands with similar properties,
    Cheers,
        Bill.

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