My wife's 09 Acadia only has 60k. I have followed a 5k OCI due to D.I. This last run on Mobil 1 5w30 there has been slight oil leakage. The plug and filter were tight. No obvious drop on the dipstick. Yesterday I changed to Mobil 1 High Mileage. On impulse, I bought 10w30 instead of 5w30. I'm thinking the low Noack of the 10w may be a good thing for DI. I live in the Dallas area so temps are already warm. Opinions?