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2010 Subaru WRX Limited Hatchback 5MT
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Discussion Starter · #1 ·
Been meaning to do one ever since I discovered BITOG and the rabbit hole it led me down...

2010 WRX w/ 118,321 miles - same oil and filter since 108,540 miles with ~3k OCIs

3,305 OCI running Castrol Edge 0W-40 with Mazda RX-8 (N3R1-14-302) Tokyo Roki Filter

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I’d extend the OCI. Insolubles are low so that’s a good filter and TBN is still in good shape.
 
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2010 Subaru WRX Limited Hatchback 5MT
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Discussion Starter · #3 ·
Yes and Blackstone suggested the same. Not sure if I should go in increments or straight to 5.5k. Still monitoring oil consumption since PCV was changed recently. Depends how long the 0.5qt left in the jug covers.
 

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Looks great!!

Wear metals and TBN look better on your car with 118k miles than on my STI when it had 20k miles. I used Blackstone to extend my OCI to 5000 miles. You could get an extra 500 miles on me!
 
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Reminds me. I haven't done a UOA in a couple years ~10,000 miles. So it's time...
 

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2010 Subaru WRX Limited Hatchback 5MT
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Discussion Starter · #6 ·
Looks great!!

Wear metals and TBN look better on your car with 118k miles than on my STI when it had 20k miles. I used Blackstone to extend my OCI to 5000 miles. You could get an extra 500 miles on me!
Thanks! I’d still take the STi, plus all the metal that was going to may have already worn away on my 118k engine :LOL:

I’m thinking of sticking with 5k myself just to stay on the safe side. May do ~4k first though.
Reminds me. I haven't done a UOA in a couple years ~10,000 miles. So it's time...
Let us know!
 
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