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I had no concerns until I saw a Camaro waiting for service when on a visit to the dealership that had a failed lifter. I tracked down an experienced mechanic who said this was the first Camaro he had seen with the problem but said he had worked on several Suburbans with the issue.
When I questioned him regarding avoiding this issue he recommended regular changes using 0W40 and to consider blocking the frequent switching with DOD.
So I have ordered a Range device to stay in 8-cyl mode.
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