RE: GOOD 20-50 oil for a Xflow

> I have always used Castrol and they do a Magnatec For Basic Engines that
> is the correct viscosity (according to Caterham - 10w/40) - also Comma
> do a semi-synthetic at 10w/40 called EuroLite that I think had some form
> of Caterham endorsement in the display panel at Camberley Auto Factors.

I've been using this too, but (on my old engine and oil pump) the pressure would drop alarmingly low after a long
motorway run - less than 1 bar, and as low as 0.5-0.6 on occasions.  I've rebuilt the engine and am using a high-flow
pump and 20W50 running in oil (i.e. c**p).  This combination means that the pressure now drops to just 1.5bar (but not
tried yet on a motorway).  I just think that a 50w oil will give greater protection in the sustained revs environment,
hence my desire for a 20w50.  I can't see myself going to Mobil1, unless I can extend oil changes to more than 3000
miles! so the Valvoline Racing 20w50 sounds favourite at present - not too expensive and recommended by other listers.

Does that all make sense?

Regards

Rupert Richardson, (1988 Caterham 1700SS, long cockpit, Xflow, live axle, 4-speed, BRG/Ally, Q296VMF)
Tel: +44 (0)20 8402 9634 Ansafone/fax: +44 (0)20 8402 9635 Email: mailto:[email protected]
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