Can I Use 5W30 Instead Of 5w20 In My Honda Civic?
Can I Use 5W30 Instead Of 5w20 In My Honda Civic? Can I use 5W30 instead of 5w20 in my Honda Civic? If you use 5w30 oil instead of 5w20 when it is not recommended or approved by your owner’s manual, it can void your car’s powertrain warranty, reduce engine efficiency, and possibly even damage