Oil change, but louder? - Page 2 - JeepForum.com
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post #16 of 16 Old 08-15-2013, 12:53 AM
Web Wheeler
1998 ZJ 
Join Date: Aug 2010
Location: Virginia
Posts: 5,548
I've used Marvel mystery oil... I like that stuff.. My engine was what i call clanking, but could be called tapping pretty loud if you put your head near the fender by the front tires... It started after used 5-40 rotella t5 oil... It didn't go away tho... i tried Marvel mystery oil per what a old mechanic said and within 50 miles the noise went away... I haven't used it since but it deff didn't hurt my engine... It did thin the oil a little tho and i could hear the lifters/rockers tapping more..

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