- Joined
- Jun 6, 2024
- Messages
- 54
Owners manuals are written by engineers. I wrote all the tech lit. for ARCO & Sunoco. Biblical allusions have nothing to do with oil specs. Not talking about oil cooling, Newton's law doesn't apply. Did you take engineering thermo? Repeat, it's hot out, the engine is hotter, the oil is almost at engine temp. Since engine oil is not alive, it doesnt matter that it's hot out. You can safely use the factory spec viscosity. Most cars take 0w20 at the moment. "Thicker oil" only hurts lubrication.The Thicker oil for a fact provides better protection. And about that owners manual, it’s not gospel. The marketing team writes those, not engineers. What’s funny is Honda owners manual says change engine coolant at 100,000 miles, on the back of the Honda coolant long life type 2 it says no more than 5 years or 60,000 miles. What about that lifetime antifreeze VAG has lol, or how about lifetime transmission fluid in the selantis group manuals. No lubricant is lifetime.