jeep engine knocking?

You engine must have a lot of miles on it (like 150k or more). Next time you change your oil try going with a thicker oil next time. From a 5w-30 to a 10w-30 or 10w-40. See if that helps with the knocking when it first starts up.
 
You engine must have a lot of miles on it (like 150k or more). Next time you change your oil try going with a thicker oil next time. From a 5w-30 to a 10w-30 or 10w-40. See if that helps with the knocking when it first starts up.
 
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