Castrol synthetic or Valvoline?

I run 5w30 in all my vehicles if they don't leak or burn less than a qt at 3000 miles. Otherwise I bump it to 10w30. If I have a leak tho I'm usually prone to fix that problem. I don't ride a Harley so my ride shouldn't leak oil lol. If I'm burning off oil tho then I have to find out why and fix it.

Same here, and I have a very small seep on the drivers front fabbed cover that will get handled before the synthetic goes in.
Kinda wanted to do it this morning, put the syn in and take it for a drive but it's frickin raining.:D
My motor is still right on the full mark from when I put it in 9 months ago, so it's not a leaker or oil burner.
Might just have to settle for a rainy drive with the existing oil.