[Roadsters] drain back tube (was "oil, fuel, air filters")

[Gary and Cindy Ault]

It wasn't just early engines.  TO the best of my knowledge, all roadster 
engines were equipped with anti-drainback tubes.  On later cars with spin-on 
filters, the tube is a light press fit into the center of the filter base.

Gary

----- Original Message ----- 
From: "Pete Peters" <ppeters914 at comcast.net>
To: "Datsun Roadster List" <datsun-roadsters at autox.team.net>
Sent: Wednesday, August 15, 2012 12:40 PM
Subject: [Roadsters] drain back tube (was "oil, fuel, air filters")


> Early engines had a tube to prevent oil draining back, thus keeping the
> filter full to provide oil when first starting the eninge. Part of Item 
> #6:
>
> http://www.carpartsmanual.com/datsun311/Datsun311Index/Engine1600R16/OilFilt
> er/tabid/174/Default.aspx
>
> You don't need that tube w/ modern filters that contain a check valve that
> provides the same functionality.
>
> Pete
>
> -----Original Message-----
> From: datsun-roadsters-bounces at autox.team.net
> [mailto:datsun-roadsters-bounces at autox.team.net] On Behalf Of Ken & Tammy
> Williams
> Sent: Tuesday, August 14, 2012 5:12 PM
> To: datsun-roadsters at autox.team.net
> Subject: Re: [Roadsters] oil, fuel, air filters
>
> I've been using a K&N oil filter.  I just noticed on the 311s tech section
> it says it works on the roadsters with the drain back tube removed.  What
> does that mean?  Is the drain back tube on the car or on the filter?
> I just screwed it on.  Should I have removed something first?
> Ken Williams
> 67 1600
> Janesville, WI
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