I just picked up 2015 Honda Civic SI 2.4 liter. 64000 miles on it. Manual says to use oil 0w-20 or 5w-20. What are your thoughts on this? Just looking for some input on grade of oil to use.

Thanks

 

The first number before the "W" is the viscosity of the oil when the engine is cold. Hence the "W" designates winter.
A thinner viscosity on initial start up with the 0 versus the 5.
The second number shows what viscosity when the engine is running warmed up.

The type of oil shows that this engine has tight tolerances.
May be on older engine to use a higher mileage type of oil (different additives) same rating.
Personally prefer the 5w-20 on my CRV. about 120k miles

 

welcome to the forum. 07 Fit 295k miles 5w-20 16 HR-V 35k miles 5w-20 Mobil 1