Originally Posted by
MacClyver
Now within a month of driving my Mirage home. Realized that despite due to the low miles it has 3 year old oil in it.
I'm quite a fan of Pennzoil Ultra Platinum. But the 0w20 is almost double the price of 5w30 (46.44 vs 24.97).
Would the 0w20 net me 3+ mpg to have gas savings offset the higher cost of oil? Would this thick an oil be bad to run? Though note PUP 5w30 is possibly the thinnest 5w30 around.
I've heard good things about Pennzoil Ultra Platinum. The BITOG forum is fond of it too. I'm a little surprised at the price you quoted - it seems pretty high.
Mitsubishi's Owner's Manual for the Mirage states to use motor oil that has the ILSAC certification 'starburst' symbol, or an API classification SN or higher oil. The manual also states to use engine oil with the proper thickness for the outdoor temperatures where you will be driving.
Originally Posted by
2015 Mitsubishi Mirage Owner's Manual
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.
I'm running 5W-20 this past year based on what others have said about it here on the forum - that it makes startup noise quieter. I find that's not the case for me, and I'll be going back to 0W-20 at my next oil change. For cold starts, 5W just doesn't flow as easily as 0W.
Conventional or synthetic, any brand has to meet the specifications claimed on the bottle label. If you are worried about one brand or another, look them up at the Petroleum Quality Institute of America's website. If an oil doesn't meet their claimed specifications, PQIA will find them out. This article is an example of what they have found:
PQIA Issues Two More Consumer Alerts on Motor Oil and Transmission Fluid on Retail Shelves in Ohio
Originally Posted by
PQIA December 17, 2018
The PQIA finds more motor oil and transmission fluid on retail store shelves in the state of Ohio that can cause harm to nearly all cars currently on the road, and catastrophic destruction of some turbo charged and/or gasoline direct-injection (T/GDI) engines. The products, Q Motor Oil and ATF, do not meet any known specifications, lack any meaningful level of additives necessary to protect an engine, and the manufacturer fails to comply with labeling regulations.
In the end, I'm sure that whatever you choose will be fine, as long as it meets Mitsubishi's specifications, either ILSAC or API SN or higher, and change it out according to the mileage (7,500 miles) & time (6 months) schedules. I wouldn't run anything thicker than 5W in a Wisconsin winter.
Let us know what you do and how it goes.
And please consider making a Garage entry.
Garage empty: add car
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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)