Reply To: Oil pressure

[Philippe AllisonParticipant]

Hi Richard, I don’t often do the forum stuff but on this occasion I thought I might add my bit. 20,000 miles ago in 2012 when I finished re-building my Roadster I spoke to the technical guys at Castro Classic Oils. He new exactly what car I was talking about and recommended XL30 for the engine and ST90 for the gearbox. The gearbox needs ST as it has bronze bush type bearing that are damaged by a standard EP90. The engine oil type is also important as the engine has no filtration system. Modern oils including multi-grades are designed to keep the dirt particles in suspension so that the filter can filter them out, the Classic XL30 allows the dirt to settle out in the sump, when the oil is changed the rubbish goes with it. This is also the reason that the oil should be changed every 1,000 miles. Hot or cold my oil pressure sits at 50psi at tick-over. Roger Williams oil pump.

I have  a thermostat fitted and that works very well and maintains the temperature between 160 and 180 F. (Renault Fuego QH205) This fits inside the top hose but is directional, so push in the right way.

Castrol Classic have a good web site with loads of useful information, you can order direct in 20litre plastic barrels and the shipping is free Last one I bought was £118.95 inc vat. They can be contacted on 01954 231668.

I know this sounds a bit like a Castrol advert, but other makes of classic oils are available and will likely have similar properties.

Good luck Philippe Allison