2009-2013 Cadillac CTS-V General Discussion Discussion, change oil @ 1K? in Cadillac CTS-V Series Forum - 2009-2013; Got a new 10 V. Are you guys changing the oil @ 1,ooo miles or going to the first scheduled ...
^^ I changed ALL my fluids and filter to AMSOIL products at around 1500 miles. Some say it's a good idea to do this on a new vehicle, and some think it's not necessary. But in my case I felt it was cheap insurance on this CTS-V.
I had the dealer swap out the rear diff fluid at 2K miles under warranty. There is a TSB for the noisy rear diff in case any of you want to take advantage of the TSB.
Engine and trans are still factory fill. I will change out my engine oil at 5K miles most likely as the factory GM oil filter highly loses it's filtration capabilities at 5K miles according to a GM dealer tech that opened up filters at all different mileage intervals and he showed me why you should never run the factory GM oil filter past 5K miles.
I won't be changing out the trans fluid as the GM Dexron VI is a very good synthetic fluid. I won't change the trans fluid until the service is actually needed.