Run a A40 spec oil in that boxer engine.
2019 WRX Limited Oil Change
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Originally Posted by bluesubie
I guess the unknown is does an oil with the operational viscosity of a 20 grade protect sufficiently in a turbocharged Subaru in all conditions that a WRX owner will see?
Yeah, I know, just run what Subaru of America recommends since they provide the warranty. But that answer is boring.
I know a guy who ran Rotella Gas Truck 0w20 in his WRX and it messed up his main bearings. I asked him why he used a 0w20 oil instead of the recommended 5w30, let alone a robust 5w30 like Rotella Multi Vehicle? No answer as of yet.
I am waiting to see what the fallout may be from Subaru recommending, under warranty, the usage of 0w20 in the FA24F. I came across a guy who swears up and down that these engines have clearances that would easily allow for the usage of 15w50.
I guess the unknown is does an oil with the operational viscosity of a 20 grade protect sufficiently in a turbocharged Subaru in all conditions that a WRX owner will see?
Yeah, I know, just run what Subaru of America recommends since they provide the warranty. But that answer is boring.
I know a guy who ran Rotella Gas Truck 0w20 in his WRX and it messed up his main bearings. I asked him why he used a 0w20 oil instead of the recommended 5w30, let alone a robust 5w30 like Rotella Multi Vehicle? No answer as of yet.
I am waiting to see what the fallout may be from Subaru recommending, under warranty, the usage of 0w20 in the FA24F. I came across a guy who swears up and down that these engines have clearances that would easily allow for the usage of 15w50.
I sent my Mobil ESP Formula 5w-30 sample this afternoon to BS, it will be interesting to compare to the Rotella MV 5w-30 as it was used in similar mileage and dring habits, maybe a tad more highway miles, but not much. I also used a can of CRC intake valve cleaner before changing the oil, I wonder if it will affect the UOA.
Will post back here when I get the results.
Will post back here when I get the results.
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I ran Pennzoil Platinum 10W-30 on advice from, bluesubie, I think. Bought new and put >40K on my 2016 before I sold it. I did get at least one UOA, and I think I posted here. The oil held up well. I ran the car pretty hard from time to time, including several floggings on Deal's Gap (Hwy. 129, "Tail of the Dragon") in East Tennessee in which I redlined it consistently in 1st-3rd gears with lots of engine braking for 20-30 min. at a time.
Originally Posted by john_pifer
I ran Pennzoil Platinum 10W-30 on advice from, bluesubie, I think. Bought new and put >40K on my 2016 before I sold it. I did get at least one UOA, and I think I posted here. The oil held up well. I ran the car pretty hard from time to time, including several floggings on Deal's Gap (Hwy. 129, "Tail of the Dragon") in East Tennessee in which I redlined it consistently in 1st-3rd gears with lots of engine braking for 20-30 min. at a time.
I think that was back in the good ole days when Shell included the Noack on the data sheets. The oil inside was GTL but the outside label wasn't yet re-branded IIRC.
As soon as bitogers find out something good, the oil is reformulated and/or details are removed from data sheets. Same thing happened to the original Green GC.
But 10W-30 is still a good choice in these engines IMO. Since it's tested at -25C, I guess it's too thick at start up for those CAFE credits.
Last summer I ran a mix of Edge 10W-30 and 10W-40 High Mileage and it helped with consumption. This summer I didn't even put on enough miles for an oil change.
I ran Pennzoil Platinum 10W-30 on advice from, bluesubie, I think. Bought new and put >40K on my 2016 before I sold it. I did get at least one UOA, and I think I posted here. The oil held up well. I ran the car pretty hard from time to time, including several floggings on Deal's Gap (Hwy. 129, "Tail of the Dragon") in East Tennessee in which I redlined it consistently in 1st-3rd gears with lots of engine braking for 20-30 min. at a time.
I think that was back in the good ole days when Shell included the Noack on the data sheets. The oil inside was GTL but the outside label wasn't yet re-branded IIRC.
As soon as bitogers find out something good, the oil is reformulated and/or details are removed from data sheets. Same thing happened to the original Green GC.
But 10W-30 is still a good choice in these engines IMO. Since it's tested at -25C, I guess it's too thick at start up for those CAFE credits.
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As promised, here is my latest UOA with Mobil ESP Formula 5w-30.
Previous UOAs were as follow:
91 182 km was with Rotella Multi Vehicle 5w-30
82 271 km was with QSUD 5w-30
74 956 km was with QSUD 5W-30
67 931 km was with QSUD 5w-30
64 076 km was with PP 5W-30
This UOA also stayed in grade like the Rotella MV, which leads me to believe that HDEO and C3 oils will shear less than Ressource Conserving (GF5) oils.
Previous UOAs were as follow:
91 182 km was with Rotella Multi Vehicle 5w-30
82 271 km was with QSUD 5w-30
74 956 km was with QSUD 5W-30
67 931 km was with QSUD 5w-30
64 076 km was with PP 5W-30
This UOA also stayed in grade like the Rotella MV, which leads me to believe that HDEO and C3 oils will shear less than Ressource Conserving (GF5) oils.
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