The best replacement for 10w 40 is 10w 30.

The best alternatives to 10w 40 are rated as following:
★★★★★  10w 30
★★★★  5w 30
★★★★  20w 50
★★★  15w 40
★★★  5w 40
★  5w 20
★  15w 50
★  5w 30 oil
  5w 50
  0w 40
  20w 40
  10w 30 oil
  20w 50 oil
  30
  10w 50 oil

Your alternative for 10w 40 is not listed? Suggest!
Speaking about 10w 40, one probably shouldn't forget about 5w 30.

Other search terms related to 10w 40 and their ratings are:
★★★★★ 5w 30
You have in mind a companion for 10w 40 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 10w 40 in all years. Click on graph for more.
10w 40
10w 30
5w 30