I recently purchased a 2013 LX570 with 135k miles on it. One owner truck with dealer service records. I'm currently getting familiar with the vehicle and performing baselining (all fluid changes). While changing the oil I noticed coolant residue near the crankshaft pulley. I've read the 5.7 is known for leaking water pumps. I do not have records of it being replaced. The coolant is all dry and flaking, no signs of an active leak. Additionally, I've driven the truck 700 miles without any signs of overheating (monitoring temp via an ultragauge) or coolant loss. No detectable bearing noise or other strange behaviors while idling.
What are the communities thoughts? Is this an early warning sign or possibly evidence of prior repairs?
I can take more detailed photos if it will help with the diagnosis.
What are the communities thoughts? Is this an early warning sign or possibly evidence of prior repairs?
I can take more detailed photos if it will help with the diagnosis.
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