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Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go hereXJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
I have a 1996 Cherokee 2 door with 5 speed manual and the inline 4.0 L 6 cyl engine. I got an oil change on Saturday and noticed that the oil pressure seemed to be a little higher than it was before the service (according to dash gauge). I checked the dipstick and the level seems pretty high. I called the garage and was told they put in 6 quarts (which is the specified amount). In the picture below, the bottom of the dipstick is toward the top (off view). The key is pointing to the upper line of the "SAFE" range. The black mark (between the "T in "NOT" and the "O" in "OVERFILL" indicates the level of the oil. Does this seem right? I know having too much oil is not a good thing. Thanks in advance for your help.
I know some times shops use overhead oil guns and the gauge on the overhead guns are not that accurate . The oil pressure on my xj is always higher with new oil . more oil in the engine does not mean more oil pressure .
I'd make sure they changed the filter. Because this is what happens when you add 6qts without a new filter. But at this point, it doesn't really matter why its high. Just drain a little out until you are back in the safe zone.
Thanks for the replies. They did indeed change the filter. I am going to drain some of the oil. It's just odd that if the specifications call for 6 quarts, why does there appear to be too much on the dipstick when you put that much in.
What IS the danger of having too much oil? I thought it was because the pressure would be higher and oil would get by oil seals.
Thanks for the replies. They did indeed change the filter. I am going to drain some of the oil. It's just odd that if the specifications call for 6 quarts, why does there appear to be too much on the dipstick when you put that much in.
What IS the danger of having too much oil? I thought it was because the pressure would be higher and oil would get by oil seals.
It doesn't on mine. 6 quarts plus filter change puts it right on the mark.
Aerated oil (by the crank whipping through it) is no good.
Thanks for the replies. They did indeed change the filter. I am going to drain some of the oil. It's just odd that if the specifications call for 6 quarts, why does there appear to be too much on the dipstick when you put that much in.
What IS the danger of having too much oil? I thought it was because the pressure would be higher and oil would get by oil seals.
One of following occurred:
1. More than 6qts was put in
2. Oil was not completely drained
3. Some mixture of 1 and 2
I buy 6 qts for every change. With a fresh filter this amount is near perfect.
Thanks for the additional information. Especially about what happens with too much oil. Is it possible the dipstick is not the correct one for the engine? That maybe a previous owner misplaced it and got another one that isn't for that engine? I kind of doubt it myself, but that is another possible explanation.
I'm going to assume for now it's the right dipstick and drain some of the oil so that it is within the correct range.