st381183
Full Access Members
I use Mobil 1, change it as I approach 5k miles usually at about 4500 miles. 2018 XLT, no cold start up issues..... yet, less than 19000 miles and will do my fourth oil change this week. I don’t think the type of oil is the problem, it’s the gunked up passage ways, stopping or delaying lubrication into the phasers and top end that are the problem. Frequent oil changes between 4-5k mile a must to keep the oil clean and fresh.