Originally Posted by oil_film_movies
Originally Posted by doyall
Originally Posted by 2015_PSD
... I find the engine produces quite a bit of fuel dilution ...
Ditto. Disposed of a GLA in part because of this. Use the highest viscosity xW-40 you can find. I found that to be Total Quartz 9000 Energy.
HTHS 3.5 oils are plenty for this application. At most it might fuel dilute down to a HTHS 3.0 level or so, which is at or above MB 229.71 0w20 levels anyway. ......
I'd change the new factory oil out at 1,000 miles, leave the original oil filter in for a while longer, and re-fill with an oil stocked (or can-order) at Advance Auto Parts, or order from Amazon:
It has HTHS 3.5 which matches some 40 weight oils (this is a thick-side 0w30).
Seems perfect for this Mercedes.
https://www.amazon.com/Mobil-121218-0W-30-ESP-Motor/dp/B00OKK7YEQ or Advance Auto Parts too.
How can they say it's a "2020" when they start selling it in March 2019? Just doesn't seem right. I guess its been done a few times though.
Misleading for someone buying a barely-used car later, seeing the "2020 model" designation for a car manufactured in early 2019 is deceptive.
I think there is no need to change the factory oil at 1k miles unless instructed so.
M1 ESP 0W-30 and PP Euro LX 0W-30 are great oils but pricey. The cheap PP Euro L 5W-30 should be sufficient. The main difference of the 0W-30 is that they carry additional specs, including the VW 504.00 with its intake-valve deposits test, and they are tested for fuel efficiency (ACEA C2). As a result, they probably have a lot of organic friction modifier, which increases the fuel efficiency and reduces the wear substantially.
I had bought my 2009 Corolla in February 2008. It was manufactured by NUMMI in Fremont in January 2008. The same car was sold outside US for at least a year before.