Good idea on the coolant. I will check that. Although, if still full, I'm either not leaking or have such a miniscule leak that it's just weeping (dripping) into the crank. Not sure if this is possible? I did my second oil change when I got the sample for Black stone labs. My initial one was at 5k miles. My second one was at 1,800 miles. Third batch of oil in the truck now and still looks green, thin and watery. Delo oil from the carton is the normal transparent light gold color
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