Urgent!!!!
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Elder User
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Urgent!!!!
the beast has developed a loud tapping noise coming from under the driver side valve cover. i have confirmed it is there with mechanic stethoscope. im leaning towards a stuck lifter. im thinking of doing an oil change with that rotella 15w40 and a quart of lucas to see if it frees it up. any ideas?
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Joined: Mar 2005
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From: Mexico, Missouri
Adding Lucas isn't gonna help your problem.
It's a thickening agent and what you need is detergent. There is literally NO additives in Lucas. You would be better off with just a quart of Synthetic oil, MMO or heck, even tranny fluid. A sticking lifter is usually due to varnish or sludge that has kept it from working correctly. And it's machined to such tight clearances that the thicker oil isn't gonna help any.
Just my $0.02
It's a thickening agent and what you need is detergent. There is literally NO additives in Lucas. You would be better off with just a quart of Synthetic oil, MMO or heck, even tranny fluid. A sticking lifter is usually due to varnish or sludge that has kept it from working correctly. And it's machined to such tight clearances that the thicker oil isn't gonna help any.
Just my $0.02
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well i have an update. i decided to do the rotella 15w-40 oil change. when i removed the oil filter i noticed that it was extremely heavy. its only 1 month old so idk if it couldve clogged so fast. however i did replace the intake manifold gasket and its possible that some old gasket got into the oil passages despite plugging everything up, or some coolant mixed with the oil and thickened it up......either way the engine has never been this quiet before. is it safe to keep using this diesel oil in my 5.0 efi?
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there was no metal on my magnetic drain plug when i drained the oil so idk. either was i will keep an eye on everything and just to be safe i will change the oil in a week or two to see if there is coolant again in the oil however i think it mixed a little when i changed the intake manifold gasket
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Joined: Nov 2011
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From: SW Florida
Just FYI yes you can run Rotella in your gas EFI motor. You can run it in whatever you want, it's actually a better oil than what's recommended as long as you use an appropriate weight for your application. ANY brand of 15-40 would have probably quieted the thing down, just by being a heavier oil.
Good luck and let us know.
Good luck and let us know.
the rotella costs as much as castrol gtx conventional where i live so screw it why not. but when winter comes (we get below 0 nights) i will go back to 5w30
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