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    P38A Rear Main Oil Seal Leaking?

    That's what I feared. When it was up on the ramp for it's MOT I was invited to inspect it and it seems to be leaking from between the engine and transmission. On the MOT certificate, and this was only a month ago, it was described as an oil leak but not excessive and they are a very rigorous...
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    P38A Rear Main Oil Seal Leaking?

    Yes, especially at motorway speeds.
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    P38A Rear Main Oil Seal Leaking?

    That's what the guy at the garage said, "if it was coming out of the exhausts it would all over the underside of the bumper near the pipes, and there is not a sign of it there". It starts probably about a foot in from each side of the car and is uniformily distributed about the centre line, with...
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    P38A Rear Main Oil Seal Leaking?

    Where do you think that it's come from them? The guy who runs the garage next door says that's where it's come from. It's due to turbulence at speed apparently, that's why cars that go up and down the motorways at this time of year have a barely legible rear plate, (sounded plausible to me...
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    P38A Rear Main Oil Seal Leaking?

    Since changing to higher viscosity oil as suggested by the good people of this forum my oil consumption had improved markedly, however I had been driving the old girl fairly easy for the past month. This morning I had to go up to South Yorkshire from the Midlands so she's had a good high speed...
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    P38A Electrical Fault.

    Good morning all, I thought it was too good to be true, my Range Rover had been working pretty well for some little time,until this morning that is. I jump in the car start her up, she starts up fine, but nothing is working on the dashboard, absolutely nothing, no warning lights, no gauges...
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    What a Difference an Oil Makes.

    Your validation is appreciated. Simon
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    What a Difference an Oil Makes.

    I appreciate the contribution David, I had no idea oil viscosity could make such a difference. Simon
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    What a Difference an Oil Makes.

    I hadn’t noticed a leak but MOT tester said that it’s leaking between engine and gearbox so I’m thinking that it’s rear crankshaft main so that explains why no drops on drive. I’d prefer it not to leak but I can live with it. I prefer it leaking it rather than the alternative.
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    What a Difference an Oil Makes.

    Passed it’s MOT with new oil last week so the engine must be alright. Thanks Henry.
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    What a Difference an Oil Makes.

    I only put 10W/40 in because that’s what the manual said. Fuel economy. . . . . you’ve got to be joking?
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    What a Difference an Oil Makes.

    I still can’t believe that 10W/40 seems to disappear but the 20W/50 is stays in. It’s like they two different engines. This revelation is not a surprise to you?
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    What a Difference an Oil Makes.

    Please don’t say that.
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    What a Difference an Oil Makes.

    I realise this flat but it’s a massive improvement on what it was.
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    What a Difference an Oil Makes.

    I did Thanks for the information. I’ll bear it in mind for next time.
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    What a Difference an Oil Makes.

    Henry, with winter around the corner I was going to try a 10W/50. What do you think?
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    What a Difference an Oil Makes.

    Well good people of the forum. My P38A was using rather alot of oil, a litre every 300 miles, I was using a 10W/40 semi synthetic. On the advice of the good people of this forum I am now using a 20W/50 and I wouldn't have believed it had I not seen it for myself, the oil consumption has now...
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    P38A Valve stem oil seals.

    3 weeks Mark. Probably around 400 miles.