- Joined
- Jul 29, 2022
- Messages
- 113
This is my first post. My 04 Yukon Denali has 418k miles on it. Been trying a few different oils and things to help with oil consumption and heavy smoke at start up as well as when I get on it. All haven’t helped. Ended up putting both new updated valve covers on. So far I can finally say with success the smoke has stopped. Bought 5 gallons of Valvoline premium blue restore straight from Cummins (79$ a gallon). I knew about this product for a while. Just didn’t know how to get it or if they still made it till now. Gonna try clean up a lot of this varnish as well as if there is any ring deposits.
If the 2 oci changes of this oil doesn’t help with consumption then ima heavily lean towards the valve seals are going out. So far tho it’s looking promising. Just wanted to share this here if can help someone and provide updates along the way.
If the 2 oci changes of this oil doesn’t help with consumption then ima heavily lean towards the valve seals are going out. So far tho it’s looking promising. Just wanted to share this here if can help someone and provide updates along the way.