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Old 12-14-2012, 12:09 PM   #24
MaddMax
Scooby Specialist
 
Member#: 9264
Join Date: Aug 2001
Vehicle:
2016 BMW M235i 6MT

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Quote:
Originally Posted by Maxwell Power View Post
Lastly:
DON'T USE 5W-30!! Read the owner's manual. It even says not to use 5w-30 for anything other than commuting and daily driving. If you're trying to make power on 5w-30, you'll be spinning a bearing.
FYI, beginning in 2012, 5W-30 synthetic is the ONLY oil you can use in your 2012+ WRX if you want to maintain warranty coverage. Completely gone is the previous language that states using other grades like 5W-40 is acceptable in more severe driving conditions. The only mention of allowing the use of another grade of oil is for topping off and even then, it says replace the oil with 5W-30 synthetic.

If you have motor problems, you're under warranty, and you pull a stack of receipts showing that you're using a diesel-spec 5W-40 or some non-energy (SN/SM) conserving 5W-30 you certainly will be risking your warranty coverage with Subaru. m

Either something has changed inside the 2012 EJ25 turbos or Subaru engineers have become comfortable with 5W-30 as long as you're running synthetic.

With that said, I will likely start running 5W-40 when my warranty is up or may start using even under warranty. There are ways to get around this 5w-30 "requirement"
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