Originally Posted By: Nick1996
Sounds like [censored] with 20wt oil and burns a ton, almost non existent engine noise and very little oil burning with 40wt, and literally 0 mpg change between the 2
Hi Nick, it makes sense to me that you are running a 40 weight oil in your Honda.
If I read the above posts on oil consumption correctly:
5W40 burns 0.5 Qt per 2k miles
5W20 burns 1.0 Qt per 1k miles
That's a 400% increase in oil consumption using the 20 grade oil !!
Even if the 20 grade has less Phos than the 40 grade, say 700 ppm Vs 1100 ppm, interms of Phos ppm per mile you are doing less damage to the cat on the 40 weight than using the ILSAC 20 weight.
Factor in less noise and no measurable MPG hit on the 40 weight, and it all makes good sense to me.