Hi all , I have a VT 3.8 V6 which I did an oil change over a fortnight ago then developed a coolant leak from the timing cover , which I fixed on the weekend . There was a 2 sec rattle on Thursday start up but all was good after that and didn't happen again . Did 25 k's this morning went to start up back up to get home and the oil light won't go off and it had the rattle sound back and not going away .