Quote:
Originally Posted by srode1
Curious, did you use Dexos II synthetic as your break in oil at start up? Old school is don't use synthetic for break in but I think GM delivers new LTs with Dexos from the get go now days.
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I followed GM instructions. Used Mobil 1 Dexos 5-30w. Prelubed, then started and drove about 50 miles and varying loads under 4000 rpm. Changed oil/filter. Drove another 500 miles and changed oil /filter. Have about 2000 miles and maybe will put another couple hundred before I put it to bed. Will change oil and filter again at that time. Point of interest, when I tried to start the first time, it wouldn't. I read further down the instructions which described the "soak and idle". Which is basically connect the battery and let sit for 8 hours, then start. I let it sit over night and it started immediately.