My son recently got a new Golf R (beautiful car by the way). My other son has a 2013 GTI and I parted with a 2009 GTI not to long ago. VW no longer provides free factory maintenance on 2017 cars (have to pay for diesel-gate I guess). My GTI and my sons 2013 got free oil changes for 3 years or 36000 miles. The 13 GTI is required to use VW spec 502 00 (like my old 09 GTI). That's pretty straightforward as there are a number of 5w-40 oils that meet that spec readily available. The Golf R is a little different. It calls for 502, 503 or 504 00 spec oil and says 5w30 or 5w40 oils can be used. I believe the 504 spec is for 5w30 oils. I'm not sure what the 503 spec is for. I was thinking that 5w40 Castrol Ultra or Mobile 1 both which meet the 502 00 spec would be fine (they worked for me without problems in the 09). Is there any benefit to using 5w-30 (504 00 spec) without impacting wear or durability? Are there any newer oils that are working well in the newer VW turbo cars that we should consider?
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