Originally Posted by
remusrm
Conventional oil and 3000 miles? The car needs full synthetic and an oil change between 5000-75000
Oh, I'm sure conventional would be fine so long as it meets the ILSAC spec and/or API SN requirements. Viscosity has been well covered here - I suppose it could be brought up too...
Originally Posted by
2015 Mitsubishi Mirage Owner's Manual Page 9-6 & 9-7
Engine oil identification mark
Mitsubishi Motors recommends using only engine oils with the ILSAC certification symbol on the front of the container.
If you cannot find oils with the ILSAC certification symbol, use an API classification SN or higher oil with the following label.
This mark appears on the top of the oil container and tells you two important things about the oil.
1- The upper part indicates the quality of the oil.
2- The center part indicates the SAE grade of the oil viscosity.
Recommended engine oil viscosity
Use engine oil with the proper thickness for the outdoor temperatures where you will be driving.
Mitsubishi Motors Genuine 0W-20 Synthetic Engine Oil is recommended for optimum fuel economy and cold weather starting.
If Mitsubishi Motors Genuine 0W-20 Synthetic Engine Oil is not available, 5W-20 grade oils displaying the ILSAC certification can be used.
However, Mitsubishi Motors Genuine 0W-20 Synthetic Engine Oil should be used at the next oil change to maintain optimum fuel economy and cold weather starting.
To replace the oil filter
The oil filter should be replaced at the time or mileage specified in the “WARRANTY AND MAINTENANCE MANUAL”.
Only use high quality replacement filters on this vehicle. The manufacturer’s specifications for Genuine Mitsubishi oil filters require that the filter can withstand a pressure of 256 psi (1.8 MPa). A Genuine Mitsubishi oil filter is the best replacement filter.
Follow the installation instructions printed on the filter.
I think it's interesting that Mitsubishi states a pressure rating for the oil filter.
I like and use synthetic, especially for it's cold-weather qualities, but I don't think it's a requirement.
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View my fuel log 2015 Mirage ES 1.2 manual: 49.6 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.5 mpg (Imp)