1999 Jaguar XJ8

Hi there,

can you first tell me if the engine is fitted with an engine oil cooler, as the correct quantity should be 7.5 liters with the cooler and approx 1 liter less with out, also with the cooler you don't change all the oil as you can't drain the cooler & lines.

Mark (mhpautos)

Hi there,

I am trying to find out if your car has a low oil safety switch, if it dose, this is what has stopped the car from starting, this is a safety device that will prevent any damage being dome, the margin allowed for low oil will be very generous, that is when the safety switch cuts in there is still plenty of oil for engine protection but it dose need topping up, I will advise if this is the case ASAP, I am sure that there will be no long term problems with the engine, as for the mechanic that has been doing this, I would be asking him why? There is plenty of information out there on oil quantities, and surly after a service they should be checking the level to ensure it is correct, but obviously not in this case. What to do? Well firstly don't go back, there is no point in taking it further if on damage through neglect has occurred, just move on and find a mechanic that will care for you and your car.

Mark (mhpautos)

Hi Marilee,

Just a quick update,

I have had a talk with a Jag tech and your car won't have a low oil cut out switch, he is of a mind as I am that there will still be enough oil in the system (albeit low) to offer sufficient protection to engine components, so I feel that the no start issue will be a non related problem, the fact that it started when the oil was added is a bit strange, but this engine should start even if the oil was totally drained (with dire consequences of course!) So I feel that the no start will need to be further investigated, I would start with a diagnostic scan and see what that shows.

Mark (mhpautos)