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#1
05-05-2007, 10:06 PM
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Experiences with Royal Purple oils and fluids?
Was reading a thread on another site recently about RP products - appears there are a few companies selling on ebay with reasonable shipping charges.
While it is still a bit more expensive than M1, it is pretty close to price of Delvac ... is it as good? Any sources for real independent analysis? Thanks!!
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George Stephenson 1991 350 SDL (200K and she ain't bent, yet) former 2002 E320 4Matic Wagon - good car former 1985 300 CD - great car former 1981 300 TD - good car former 1972 280 SEL - not so good car a couple of those diesel Rabbits ...40-45 mpg 
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#2
05-05-2007, 10:14 PM
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RP is good for racing engines and short drain intervals. Royal Purple uses a different chemistry than most. They are one of only a handful of marketers using Moly (Molybdenum Disulfide) in their oil. Moly is a solid, specifically banned by Cummins, due to excessive valve train wear.
Mobil1/Delvac1 is a better oil for daily drivers and extended drain intervals.
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#3
05-05-2007, 10:45 PM
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Ah .... yeah, familiar with it - I don't recall seeing any of the literature discuss having it - means they are sensitive ... is the base synthetic?
__________________
George Stephenson 1991 350 SDL (200K and she ain't bent, yet) former 2002 E320 4Matic Wagon - good car former 1985 300 CD - great car former 1981 300 TD - good car former 1972 280 SEL - not so good car a couple of those diesel Rabbits ...40-45 mpg
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