Which Engine oil is better

Happy New Year everyone, I have question regarding which engine oil, I have a 1995 Jaguar sovereign 4 ltr, it has done 157,000 miles, not sure which oil is best for a higher mileage engine, I have owned the car since 2002 an has been looked after, do I go for fully synthetic, par synthetic or mineral oil, any or all help would be much appreciated

Regards Steve

I only use full synthetic, not because it’s strictly necessary (part synthetic will do) but because it’s the best possible choice. SAE 10W40 or 20W50 depending on where you live.

These engines do not require anything exotic. And they’re famously rugged. I’d be inclined, personally, to keep using the same as I’ve been using all along.

Is there something going on that prompts you to make a change? An increase in oil consumption? A drop in compression? An anticipated change in use or driving conditions?

Sometimes a one-step heavier oil will reduce oil consumption…if that’s a problem you’re having.

There are oils out there specifically marketed as “high mileage” oils. I’ve not researched the real or supposed benefits nor researched the veracity of the manufacturers’ claims.

For its age your car has accumulated relatively few miles. If such low use continues I’m not sure you’d realize any tangible, measurable, real-world benefits of a specialty oil. Other than, perhaps, some extra peace of mind. And there’s nothing wrong with that.

FWIW I had an X300/XJR for many years as a daily driver. Bought it at 30k miles and sold it at 171k miles. I used whatever brand oil was on sale that day, changed every 5k miles. When I sold it the engine was still quite healthy.

Cheers
DD

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Graham thank you so much for the reply it’s much appreciated

Thank you Doug, regarding any previous problems there isn’t any, never had an issue oil pressure has always been perfect, the reason I asked which oil is because a garage has always done the service, I am going to do it myself this time so wanted to know which oil to buy, I did research on the web and some were for semi synthetic and others fully synthetic, obviously want the best for my engine but don’t want to pay a small fortune, was looking at semi synthetic 10w/40

Thank you Doug, regarding any previous problems there isn’t any, never had an issue oil pressure has always been perfect, the reason I asked which oil is because a garage has always done the service, I am going to do it myself this time so wanted to know which oil to buy, I did research on the web and some were for semi synthetic and others fully synthetic, obviously want the best for my engine but don’t want to pay a small fortune, was looking at semi synthetic 10w/40

Any decent brand of oil, that’s on sale.

As long as it is to manufacturer specifications it’s probably better for any engine to use a cheap oil and change it a little more often :slightly_smiling_face:

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