In a small 4-cylinder Toyota, I’m leery for thicker oil on those. I’ve ran a thick 10W-30 in a Prius recently that was closer to a 15W-40.
The V6/8 cars I’m not as concerned - the OMs aren’t worded with dire straits if anything besides a 0W-20/5W-30 is used besides the MPG hit. Now, with the new Dynamic Force M20/A25 engines built around 0W-16, that would be all I would use.
In a Prius(or Camry hybrid), thick oil may cause a no-start condition if MG1 can’t spin the ICE within a certain timeframe. Otherwise, a touch lower oil pressure and maybe some sluggishness or slow cranking on a cold day(without oil heaters). The oil clearances might be thinner on their I4s.
In a Prius(or Camry hybrid), thick oil may cause a no-start condition if MG1 can’t spin the ICE within a certain timeframe. Otherwise, a touch lower oil pressure and maybe some sluggishness or slow cranking on a cold day(without oil heaters). The oil clearances might be thinner on their I4s.
In a Prius(or Camry hybrid), thick oil may cause a no-start condition if MG1 can’t spin the ICE within a certain timeframe. Otherwise, a touch lower oil pressure and maybe some sluggishness or slow cranking on a cold day(without oil heaters). The oil clearances might be thinner on their I4s.
Well I thought I would give an update 4 years later. To all the naysayers that insisted on fixing it, been using a 10w40 with positive results. The engine runs great and the oil leaks less. A win for 10w40. It also starts just fine in the cold.
What, it didn't blow? The small return passages didn't clog up? The VVT didn't fail? The tighter tolerances didn't cause oil starvation and bearing destruction?
/sarcastic comment
Thanks for the update!
As expected, no harm came from using a thicker oil which is ok to use in other countries, and suggested in the manual in the US.
It is nice to see a real world situation that bears out what many of us have been saying over the years.
