Since my husband retired, we aren't driving our 2011 LR4 much any more. Our last service on the vehicle was performed at 61k miles in Sept of 2015 -- that was the 5 year 75k service. Time wise, I'm almost 5 months past due for the 6 year 90k service, but we currently only have 68k miles, so only 7k miles driven since the last service 17 months ago. Is there a risk of oil degradation over time, or am I OK? I probably shouldn't wait until I hit 15k, but how long should I go? Prior to this, I have been really good about getting maintenance service done every year. I'm also wondering about the brake fluid flush. I had it done at the 45k service, at which time I had around 40k miles on the car. This is recommended for the 90k service. Should the brake fluid be replaced every 3 years regardless of miles driven? Thanks in advance!