Originally Posted by
ahausheer
I am personally going to 15K with Mobil 1 EP, and will send a used oil sample for lab analysis...
You guys might want to try 10-12,000 miles first and then send in a sample. I did a similar test in my G5 with 5W30 Mobile 1 EP. This car was always well-maintained and driven carefully. I sent in a sample at 9,425 miles and here was the comment in the Blackstone Labs report...
Mobil 1 claims this is a 15,000-mile oil, and it probably could be in use that long, but as we mentioned in the previous report, it depends on several factors. Your engine was doing well after this 9,425 mile oil run, so with a TBN of 2.8, we wouldn't be surprised if you could run this oil out to at least 12,000 miles.
It's hard to say if it'd make it to 15K miles without excess wear, but it's possible. Try 12K miles next and check back. If all is well at that time, 15K miles should be fine.
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View my fuel log 2015 Mirage ES 1.2 manual: 52.2 mpg (US) ... 22.2 km/L ... 4.5 L/100 km ... 62.6 mpg (Imp)