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Best oil for twincam


terry b

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I use Castrol Product 351 in my twin cam. This oil is based on the older CRI 40 that Ford used in the Escort Twin Cams. Old fashioned but I have uesed it in TCs for years.

 

Oil pressure at idle is quite low with a hot engine and standard pump. 10 psi would be typical.

 

I tried using an electrical gauge recently and had a zero pressure reading at idle, on a "new" engine that had been run on a dyno.

 

I fitted a calibrated mechanical gauge and had a reading of 15psi.

 

It seems that the tolerance of the sender and the instrument head combined to cause the error.

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