Not a major desire. I've seen some on the 2.4l Theta went to 5w-30 and reduced oil consumption. Was curious if anyone had gone 5w-30 and if so, how it was doing in this engine. My son has this one.
As for me & my 13yr old 2010 Koup SX 2.4L 6MT MPi Theta 2, after buying it from my friend (because of childhood neck break had to get rid of Forte) he would use 5W30, a bit thicker & bit more protection cause 5W20 was too thin & given in South TX 90% of the times it's warm, hot, humid weather. When I bought it, I changed out all the fluids, do my own diy, repairs, fixes & maintenance that doesn't require dealership services.
I think when. I bought it, it was at 70,000 miles. Right now has 95,000. Has never burned oil, leaked fluids & sonfar so good haven't had any engine or transmission problems other than the clutch slave going out.
The eccentric slave cylinder was the only thing that has been replaced cause the clutch pedal was soft & not returning to start position & not allowing gear selection when engine was on.
As for the engine oil, it has never has dropped or burned any at all. Yes, fluids get used, turn to gas/evaporate due to heat friction use wear & tear. Not in levels or excessively. Maybe in milligrams in my case.
When a vehicle burns oil, that means the piston rings are wearing out/worn out & are no longer keeping oil where it's suppose to be kept.
Toyota are known to be motherf*cking thirsty oil burners. Their piston rings wear out fast. The fix is to install new/better longer lasting piston rings. I have to carry 3qts of oil in the hatch & check the oil level every 50 miles.