Howdy All,

As the title says I have 3.5 SD1 rover v8 that has got low or poor oil pressure.

It's a 11A numbered 76-87 engine with an intake, holley and headers that runs strong. Has had a oil change with 20-50 and on cold idle will provide 25 psi which can drop to about 7 psi as the oil light can flicker at hot idle which is apparently not overly rare. Engine is not full of sludge either so may have been rebuilt but hasn't been decker as number very visible.

So my question is what can I do to give me reliable stress free oil pressure?

I considering adding some Lucas heavy duty oil additive which won't hurt but I know it's not the answer.