Direct Inject Turbo car with 125k miles and short commute, what's best?

[MVAR]

Wouldn't an oil catch can help?

That was the thought back then but they didn’t seem to do much in the way of preventing coking. They did catch stuff but the buildup seemed to happen just as fast with or without

 

[Vitamin Yoda]

That was the thought back then but they didn’t seem to do much in the way of preventing coking. They did catch stuff but the buildup seemed to happen just as fast with or without

Leaky valve stem seals? Seems to be a common issue with older Hyundai GDI engines as well.

 

[MVAR]

Leaky valve stem seals? Seems to be a common issue with older Hyundai GDI engines as well.

With the amount of people tracking the same issue on the old Mazda speed forum, I’d doubt it. The pcv system was known to lose ring seal on those engines as well.

 

[nicholas]

I've gone around in circles trying to figure this out. I've got a 2012 Mazdaspeed3 and I'm trying to figure out an oil that will keep her going as long as possible. It's a turbo with direct injection, 125k on the clock. I've read about dexos2 or 'euro' oils being better. My current commute is about 10 miles so more short'ish trips with 1-2 longer trips per week. Yearly mileage estimate from last car is 10k a year. I'm new at this. Have had several older beat up cars that it was just 'whatever in spec on sale' was what they got.

5w30 syn short OCI
3k tops
Every 6 months otherwise