Quote:
Originally Posted by Sportsguy83
Went with M1 EP 5w30  |
Sorry, I missed this. I would top it up with some Mobil1 0W-30 Racing oil if you need to add any.
I probably would have picked the Mobil1 ESP 5W-30 based on the HTHS. It has a low TBN though so I wouldn't go any further than 5k miles on it. I would definitely do a uoa (with TBN) on the EP though. It
might be fine for your conditions, but anything Resource Conserving is typically know to shear down a grade in Subaru turbos.
Mobil1 5W-30 High Mileage would have been my second pick since it has a higher HTHS than the RC Mobil1 oils or even Mobil1 10W-30 High Mileage as it meets Euro ACEA A3 specs (higher HTHS than M1 5W-30 HM).
Euro Castrol 0W-30 is probably a good bet as well. Yes, the Pennzoil oils are good and PU 5W-30 has been shown to stay in grade in stock, mainly highway driven WRX's over several consecutive uoa's. The PUP 10W-30 has a very low NOACK volatility at 5.7% (lower than Red Line 10W-30).
http://www.pennzoil.com/wp-content/u...F-5-en-TDS.pdf
Edit: Scratch the 5k recommendation on M1 5W-30 ESP. Change at 3k running E85 regardless of what oil you run!
-Dennis