I've heard from several sources and one of them being a subaru performance tech at a subuar dealership near me that dino oil is better for our cars than synthetic. Synthetic I hear will seep through the turbo seals and over time ruin the turbo.
Someone shed some light on this. THank you.
Your supposed to run dino for the first 10K miles to allow for the seals to fully seat and expand.After that synthetic is more than appropriate.In fact i believe its recommend in the factory service manuals.I don't see how turbo seals are any different than engine seals.For more info i would lurk through some forums for the general consensus.I would say 90% of the people in Subaru forums are using synthetic.NASIOC has a pretty good Service & Maintenance section with great info.And for anyone that changes there own oil this thing is a must www.fumotovalve.com
Not sure if this helps everyone but on 2011 SOA says the following:
Beginning with the 2011 model year we are producing our WRX turbo engines with synthetic oil and is required for all oil changes. As stated in the Warranty & Maintenance Booklet on page 29, the oil change interval for the WRX is 7500 miles or 7.5 months, whichever comes first. If you operate your WRX under "severe" conditions (pg 30) you may need to change the oil more frequently.
The new 2011 W & M Booklet no longer has the comment in NOTES on page 30...."All turbo charged vehicles are considered to be operated under severe driving conditions."
Just an update. I'm sure not harm in changing sooner than 7500 - after the first 1000 break in - especially if hard driving but looks like synthetic is the way to stay.