Well Klaus and company, I always value your input, never had the low pressure before the additive, I'll think I will go the 20w30 route first and debate the dropping of the pan. I cantravel in 45 mile increments until it starts to flicker to on, then I shut the car off for 5minutes and can go again for the same.

Not a good sign. I don't know what White Sheperds Oil is supposed to do, but adding any additive that supposedly plugs an oil leak is not a good thing. Especially if you don't first know where the oil is going. If it is not dripping out of the bottom of the car or the intercooler weep hole, it is probably making its way past the valve stem seals on older engines.

AutoRx is meant to clean ALL of the sludge out of an engine, not stop any leaks. Will it work for yur car? Probably not in its present state.

Oil pressure drops because of either a failure in the sensor, not likely, or an O ring on the pick up tube at the bottom of the sump. Replacing O rings is not fun because removing the oil pan is a pain. Besides, there is no gasket, just glue (RTV) to put the pan back on. The O rings are cheap and you should buy OEM if you go that route.

A mechanic can verify that the oil pressure is close to zero. You could also put in a couple of quarts of 20W30, depending on how cold it is outside. But you cannot drive it if the pressure is too low.

Klaus
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Always willing to listen, just not able to take direction.

Is there any whine noise? I had a situation on a used engine where old sludge broke free and clogged the oil pick in the oil pan and starved the engine for oil causing low pressure. When this happened, there was a loud whine, like a low fluid or bad power steering pump.

Solution, pull the oil pan and clean. A real pain on a 98 S70.

Keith

98 S70, '01 V70 T5, '03 S60 2.4T

This is just a shot, but you might want to check it out.

The low pressure light comes on periodically on my 93 850. After reading old posts on the BB I learned there is an electrical fault with the oil pressure sensor on some 850's and there is no low pressure. Perhaps your S70 has that problem?

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Bessie - 95 855 GLT Sportwagon; 93 854 GLT; Inga - 90 244 DL 300k, gone but not forgotton