Originally Posted by Jimmy_Russells
Originally Posted by UG_Passat
Originally Posted by Jimmy_Russells
Originally Posted by UG_Passat
The 30,000 km OCI is not a fixed OCI. It is flexible service interval, based on driving habits. It is certainly possible that the oil life monitor will tell a driver to change the oil at 16,000 km or sooner, especially a driver in an urban area. Also potentially disappearing from the Autobahn is unlimited speed limit zones, due to climate change concerns, which would bring their average freeway speeds more in-line with the US.
Well that's not really the point. If they spec an oil for USA they know if will (should) only be used for maximum 10k or one year. So perhaps giving up a little HTHS in this scenario is no big deal when they know the potential in Europe still exists to go much farther. CAFE matters but I'm not convinced it is the whole story.
VW has always spec'd an oil to be used for a max of 10,000 miles, when there was alternative specification with the same HTHS requirement that is suitable for their Flexible Service Interval.
In Europe, prior to 2019, with the introduction of OPF's, fixed interval cars used 502.00. Flex intervals used 504.00, WITHOUT giving up on HTHS.
Even before 504/507 standard, VW's flex intervals were 503/506 standard, with the same HTHS requirement (except 506.01, which was a 0w30 with 2.6 to 3.5 HTHS)
Prior to 2019, 502.00 was specified even though they know the potential in Europe still exists to go much farther, without giving up on HTHS.
Also as pointed out earlier, 508.00 SAP's is not suitable for the OPF's now installed on 2019 Cars, which 504.00 has a lower limit on SAP's than 508.00.
Keep in mind though, 504/507 standard was initially meant to supercede both fixed intervals (502/505) and flex service intervals (503/506) into a single standard. And, 0w30 504.00 is being spec'd on USA 2019 Golf R's, with a fixed interval with the ability to go flexible intervals in Europe with the OPF.
https://forums.vwvortex.com/showthr...p=113338953&viewfull=1#post113338953
Yes, I realize this. However, until recently in the USA there was no alternative to 502 with similar HTHS that could be used. Even if they wanted to extend OCI, it was not possible with US gasoline. Now that lower sulfur gasoline is here they have switched cars with 3.5 HTHS requirement to 504 and 502 is essentially obsolete.
I'm sure the 508 was designed because they needed to increase mileage overall. However unless someone is tracking the car or towing etc, it likely makes little to no difference in terms of engine longevity when compared to using 504 or 502 instead.
Actually, older Mobil 1 0w40 met 503.01, which is a flexible service interval oil, so there was an alternative (before the current FS version that lost some certs). Pretty sure the old GC 0w30 was a 503.01 oil also.
Yes, the 508 was designed to promise the 4% fuel economy, but comparing GTI's from 2018 to 2019, 508.00 according to the EPA fuel economy estimates, isn't proving to be a 4% improvement, it's about equal in the DSG realm, but about a 4% loss when comparing 2018 6MT to a 2019 6MT.
All the Budack's are designed to run 508.00 from the start, so there is no published data point to compare to a 502 or 504 oil.