High Mileage Oils
#1
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I will be changing the oil this weekend for the first time in my new to me XJ8.
I noticed some white deposits on a few of the spark plugs which can indicate leaking valve seals. My research has found that a good "high mileage" oil can help condition these seals and reduce the amount of oil that is getting by the seals and being burned.
I have no other indication of burning oil like a blue cloud or anything but I figure while I'm doing the oil it can't hurt.
I'm thinking of Mobil 1 High Mileage unless someone has a better idea.
I figure I will do 5K mile changes.
Also, if I can't get my hands on a genuine Jaguar filter what's the best alternative? Purolator and Bosch?
Thanks in advance.
Eric
I noticed some white deposits on a few of the spark plugs which can indicate leaking valve seals. My research has found that a good "high mileage" oil can help condition these seals and reduce the amount of oil that is getting by the seals and being burned.
I have no other indication of burning oil like a blue cloud or anything but I figure while I'm doing the oil it can't hurt.
I'm thinking of Mobil 1 High Mileage unless someone has a better idea.
I figure I will do 5K mile changes.
Also, if I can't get my hands on a genuine Jaguar filter what's the best alternative? Purolator and Bosch?
Thanks in advance.
Eric
#2
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If your plugs looks like the top one in this link:
NGK Spark Plugs USA
and you're not using an appreciable amount of oil, I'd keep using the same brand and not fool around.
Using synthetic oil with a 5K change interval is a waste of money, but do what makes you happy.
NGK Spark Plugs USA
and you're not using an appreciable amount of oil, I'd keep using the same brand and not fool around.
Using synthetic oil with a 5K change interval is a waste of money, but do what makes you happy.
#3
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#6
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Engines that burn oil usually leave black oily deposits on the plugs-not white deposits as in your pic. If there's no blue exhaust smoke & the engine is not using more oil than normal, then just keep things as they are.
If you're going to change your oil every 5k miles, then don't bother using expensive synthetics-use a 10W/40 part synthetic which is lower in price & can justify being changed at 5k mile intervals.
If you're going to change your oil every 5k miles, then don't bother using expensive synthetics-use a 10W/40 part synthetic which is lower in price & can justify being changed at 5k mile intervals.
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