The essential problem with a 10w-40, or 20w-50 or anything with that large a viscosity spread is that the large amount of viscosity improver required does not leave enough room in the mix for sufficient lubricating oil.
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Oil viscosity for my 2010 Honda Civic | 6 | 21163 | July 23, 2012 | |
| Honda Civic (06) Oil Viscosity | 11 | 1719 | July 14, 2013 | |
| 0w-20 Motor Oil | 15 | 8622 | January 28, 2012 | |
| Las Oil Change I used 5w-30 instead of 5w-20 | 40 | 177887 | January 12, 2018 | |
| Oil weight for 2000 Civic EX | 2 | 31981 | March 3, 2010 |