I have an 02 suburban with the 5.3 that has ~220k miles on it.
I've owned it for 5 or 6 years and always do regular maintenance. No idea what previous owner did concerning oil changes but there is definitely some sludge.
I used a product like Motor Flush, or some such, out of curiosity about 18 months ago. Ever since then, my oil gets dirty much faster. I thought this would be temporary as things get "flushed" out in a change or 2.
However, since using the product as directed, I have...
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I've owned it for 5 or 6 years and always do regular maintenance. No idea what previous owner did concerning oil changes but there is definitely some sludge.
I used a product like Motor Flush, or some such, out of curiosity about 18 months ago. Ever since then, my oil gets dirty much faster. I thought this would be temporary as things get "flushed" out in a change or 2.
However, since using the product as directed, I have...
Read more