M1 EP 5w30 3.2k mi; Subaru Outback XT 2.4L FA24DIT

[edyvw]

Jeepers it's fuel diluted, and the 710 Spec is 0W-20.

No use sacrificing engine response to a thick goo lubricant ... or is it?
You never know what margin of safety is required until you exceed it.


I will say it is interesting as a matter of comparison that Hyundai/Kia are spec'ing VAG 504,00/507 0W30 on their 2.5l Turbo models that don't have split crank throws.

side note: Anyone have bearing width spec on these two engines? Looking at Subaru cranks it appears at a casual glance they are severely are space limited due to the short boxer engine depth.

They employ knife edge "counterweights" and then apparently narrow the mains journal to allow more width for the rod journals. These things scare me and I have two in the drivway. One is filled with 0W-16. LOL.

Subaru Crankshaft


View attachment 274952

“Use adequate oil in turbo engine.” No one ever said.

 

[Impatient]

IIRC its 6k standard oci. Premium fuel is crazy here.. even costco.
for example yesterday at sheetz 88 is 2.46, 87 2.66, 92/93 was 4.09.

Costco today 2.56, 3.50

one of the main advantages of the fa24dit vs the fa20dit
the 2.4T is able to run 87 octane.

You already know at least as much as I would hope to learn, and maybe you are smart to keep your next interval (on ESP) under 4k just to “learn” how ESP will perform, but I would hope you can go 5k + once tested. I’ve asked both Amsoil and HPL about using euro oils in my Ford Ecoboost (also a TGDI), and they both shrugged / advised against. But it sure seems to work well in my EJ25 T, and some swear by it in the EcoBoosts.

Yeaouch on the price of premium up there. I suggested it because some speculate premium helps reduce the dilution in Ford Ecoboost. Ford manual says to use at least 87 octane, even in mountain states where “regular” is either 85 or 86, but premium under higher loads. That combined with premium requirement in older Subaru turbos like mine led to my suggestion. But yeah, that would be a hefty price to pay. Premium pricing Is bad here too, but not that bad.