When I first changed oil in the Civic SiR (Canadian model) I picked up last year, I put in PP 5w20 High Mileage. They usually have Mobil1 as well, but I think they (Canadian Tire) were out of stock at the time. I'm sure either one is just fine.
The manual states that it can accept 5w30, but should switched back to 5w20 when possible. I've read a number of things about 30 being better for the cams, Honda's only recommending 20 because of CAFE, etc. I saw another thread with UOA/VOA's showing that Mobil1 0w20 actually pushes close to a 30 (I'm not sure if that applies to the H/M formula, though).
Wondering if it's beneficial to just run a 30? Maybe 5w30 in summer and 0w20 or possibly 0w30 winter?
The manual states that it can accept 5w30, but should switched back to 5w20 when possible. I've read a number of things about 30 being better for the cams, Honda's only recommending 20 because of CAFE, etc. I saw another thread with UOA/VOA's showing that Mobil1 0w20 actually pushes close to a 30 (I'm not sure if that applies to the H/M formula, though).
Wondering if it's beneficial to just run a 30? Maybe 5w30 in summer and 0w20 or possibly 0w30 winter?