I have read that a lot of the problem with engine wear in earlier generations was that the oil wasn't protecting the engine properly in the first minute of operation, but that thinner grades now are doing a much better job at startup.
Has anyone seen UOAs of engines from 1990 or before, that presumably would have much higher levels of wear metals, than those with modern oils? I know that seeing a dozen from before that time would be a hopelessly small sample, but still, it would be nice.
Has anyone seen UOAs of engines from 1990 or before, that presumably would have much higher levels of wear metals, than those with modern oils? I know that seeing a dozen from before that time would be a hopelessly small sample, but still, it would be nice.