I just purchased a new 2013 FX 37 and was surprised the dealer recommended having the oil change at 3700 miles. I came from a long line of European cars, VWs, Volvo, Mini and they all at least go 6,000 to 10,000 miles on synthetic blend, but I always change the oil myself and go fully synthetic and change the oil and filter every 6,000 miles.
1. What type of oil do the dealers put in the car during the 3700 mile oil change - reg oil, syn blend or full syn?
2. If I continue to change the oil myself and go 6,000 miles and have the receipts to prove it , will I still be covered by Infinity warranty.