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52826 Views 38 Replies 11 Participants Last post by  TaxiGirl
Over a year ago, I had to get one of the heads opened in order to replace #3 and #5 rocker arms. Well about 6 months ago, I started having the ticking noise again. I put up with it for a month or so,
I found a video on Youtube that was talking about using Marvel Mystery Oil and although I have added it oil before in small amounts, I had never used as much as a quart. Mostly, I put it in the fuel tank. This time instead of using 6 quarts of synthetic oil, I used 5 quarts and used 1 quart of Marvel Mystery Oil. After about 3 days the noise stopped and has not come back for over 3 months. Every oil change I started to do the same thing. At first I was using 5w30 and the last time to 5w20 but, I think i will go back to 5w30 because the Mystery Oil is real thin. BTW it smells really good also..


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Most synthetic oils will measure the full band of viscosity when tested by an independent laboratory. I think the only reason people like Mobil1 rate them is to meet manufacturers specs. I think Corvette engines specify a 5w-50 and the Mercedes 3.6L diesel wants a 0w-40. It's crazy but synthetic oil is a product that is still way advanced. It can withstand temperatures and pressures that the metal components of the engine can't tolerate.
Hmmm .... in thinking back to the 60's and 70's .... crap like STP temporarily quieted engine noises. It was simply due to a thicker substance creating a higher pressure. All it did was mask the real problem.
I think it was my 1996 3.0L that I replaced all those little things I called lash adjusters. They were a steel slug with a hole for the oil pressure to build. Sure quieted that engine down though.
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Didn't change the way it ran. It ran fine, just a bit clattery at times.
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