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Old 09-08-2022, 11:23 AM
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vet57air vet57air is offline
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Quote:
Originally Posted by srode1 View Post
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.
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.

Last edited by vet57air; 09-08-2022 at 11:31 AM.
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camcojb (09-08-2022), Ketzer (09-08-2022), srode1 (09-09-2022), waynieZ (01-25-2023)