2016 Subaru STi 41k mi; Castrol Euro 0w-40 3.3k mi

[JamesGames]

Lot of idling, lot of redlining, lot of short drives + a 500 mile roadtrip. The car is my daily driver now and is short tripped to and from work (7 miles one way). Can't complain! I do use an oil catch can, but haven't emptied it in over 15k miles as it still has barely anything in it.

 

[fantastic]

Your UOA have been very consistent. Good work

 

[We're Metals]

Well that's a boring report. I wonder what a run to 5,000mi would look like?

 

[himemsys]

That oil could do 10k miles easily. But I would start inching up your mileage to 5k, 7k, etc just to see how the numbers play out. 3k seems like a waste for this oil. Most any other oil could do 3k in this or any engine without a hiccup.

 

[JAG]

How long ago did you buy that oil? I expected to see much lower calcium and more magnesium to help prevent LSPI. Here is a VOA: https://bobistheoilguy.com/forums/threads/castrol-edge-0w-40-sp-voa.384239/#post-6925401

 

[SubieRubyRoo]

LSPI is about 99.9% Boogeyman and 0.1% reality. There are ways to prevent LSPI that don’t show up in a UOA.

 

[bluesubie]

That oil could do 10k miles easily. But I would start inching up your mileage to 5k, 7k, etc just to see how the numbers play out. 3k seems like a waste for this oil. Most any other oil could do 3k in this or any engine without a hiccup.

Presume you’ve never owned an EJ turbo? I fell victim to extending my OCI based on “good uoa’s” but never again. 3-5k is a good interval IMO. 6k would be an extended OCI.

 

[himemsys]

Presume you’ve never owned an EJ turbo? I fell victim to extending my OCI based on “good uoa’s” but never again. 3-5k is a good interval IMO. 6k would be an extended OCI.

Well, I did say to start off at 5k. 3k seems utterly wasteful for a stout Euro oil.