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Royal Purple Or Mobil1?


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Ok, so the title asks my question. Royal Purple or Mobil1 oil? I need to do an oil change here pretty soon. I just bought my '00 Boxster 2.7L with 56k miles on it a month ago and the gentleman I bought it from said it had been about 9k since he last changed the oil. My other truck is an '88 that I've had for four years and I just take it in to the nearest, cheapest oil change station for 20 bucks and have them put whatever in it because it's just a daily commuter that's still running after 260k miles. I have many different people tell me different things about these two brands of oil. They tell me they swear by Royal Purple, on the other hand someone told me that RP is over-priced since it's really only beneficial if you're constantly pushing 130 mph. I know Porsche recommends Mobil1. Can anyone give me some input. I would really appreciate it. I just got back from O'Reilly's and he said it would be cheaper for me to buy a case of RP than the two, six pack cases of Mobil1. That price difference isn't a big deal right now, but I want to know what y'all think.

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Ok, so the title asks my question. Royal Purple or Mobil1 oil? I need to do an oil change here pretty soon. I just bought my '00 Boxster 2.7L with 56k miles on it a month ago and the gentleman I bought it from said it had been about 9k since he last changed the oil. My other truck is an '88 that I've had for four years and I just take it in to the nearest, cheapest oil change station for 20 bucks and have them put whatever in it because it's just a daily commuter that's still running after 260k miles. I have many different people tell me different things about these two brands of oil. They tell me they swear by Royal Purple, on the other hand someone told me that RP is over-priced since it's really only beneficial if you're constantly pushing 130 mph. I know Porsche recommends Mobil1. Can anyone give me some input. I would really appreciate it. I just got back from O'Reilly's and he said it would be cheaper for me to buy a case of RP than the two, six pack cases of Mobil1. That price difference isn't a big deal right now, but I want to know what y'all think.

Neither....................

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Many members (me included) prefer Castrol Syntec 5W or 10W40 flavor. As Loren stated, this has been covered time and again with no "correct" answer. Those that know the engines well, will tell you to stay away from Mobil 1 0W40...too thin and increases wear. Do read Charles Navarro's report on the LN website...you will gain the insite to the thinking behind oil discussions.

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Loren

I've definitely been reading as much as I possibly can, believe me. I don't do things until I have as much knowledge as I possibly can, especially with this type of vehicle. I'm just doing my best to baby my car because it's my first one and I want to keep it around awhile :)

Jmatta

Things to stay away from is very helpful. I was planning on sticking with a 10W40 it is just a matter of figuring out what name to buy from.

Thank you all for the input.

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