after 3 months got it restarted and the engine made allot of noises loud metal to metal after start up and getting engine to warm up. The noise is coming from the front where timing chain is and just aft of the time chain. I suspect maybe the timing chain tensioner or oil gallery in the valve train for the cams is plugged. It has about 279K miles plus some more I suspect. I use 5-40 synthetic oil since i bought it. Any suggestions?