cdodkin
Member Since: 18 Aug 2008
Location: Ex Pat Brit in California
Posts: 700
  
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| Note recommended Mobil1 has moved to 0W40 |
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Been using the Mobil1 5W30 Truck & SUV oil in the LR3
Noted today that Mobil have changed the recommendation on their website to 0W40
when I check for my 02 D2 - they also recommend the 0W40 for that now
Any ideas why the change? 08 LR3 SE V8 - 02 D2 SE7 V8
Porsche 911 (03 996) - 2013 MINI Cooper S
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 1st Mar 2010 5:28 pm |
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DingMark
Member Since: 14 Sep 2007
Location: Perth Oz or Erbil, Iraq
Posts: 388
  
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I'm not positive as to why, but will hazard a guess. About 30 yrs ago, Mobil1 was 5W20. About 15 yrs ago, they were able to go to 5W30, and there have been a few variations since. I suspect they've finally been able to prove, test, and reliably manufacture 0W40 which now will last & lubricate as long as the earlier products. I've worked in the edges of lubrication oils and the improvements have been amazing (well at least to us chemical engineers) but the amount of testing and validation that is needed is mind-boggling, as it should be.
These improvements won't do much for us in Oz (we had 104F or 42C here Thursday and don't get down to freezing) but to you in the more arctic climes there will be an noticeable ease in cold starts. Jim Dowell - D4 HSE TDi, 12,000 hydraulic winch & hidden winch mount, MTRs, TyreDog, Traxide 2 x aux battery system, fixed air compressor, Dolium roof rack, MitchHitch.
RIP 2005 D3 HSE V8 5 seater gold (stolen and torched)
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| 2nd Mar 2010 4:14 am |
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cdodkin
Member Since: 18 Aug 2008
Location: Ex Pat Brit in California
Posts: 700
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0W40 has been the standard for some time in the US for certain European cars - it's factory fill on Porsche, and is the recommended fill on VW for example. (Previously VW used to be 5W30 centric)
Mobil used to recommend their (SUV) 5W30 for both my Land Rovers, but they now state that 'The company that manufactures your vehicle recommends this Mobil 1 product, or has a special requirement.' and direct you to 0W40 only.
So something has definitely changed - I'm guessing that additives have changed and that the 5W30 no longer meets the complete spec for Land Rover engines.
My experience with 0W40 has been excellent over the years - so I know it's a good product.
Just interesting to see manufacturers moving to it as the 'only' option from the Mobil camp. 08 LR3 SE V8 - 02 D2 SE7 V8
Porsche 911 (03 996) - 2013 MINI Cooper S
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| 2nd Mar 2010 6:31 pm |
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