alsatropine

iTrader: (2)

Lol. I use lucas in all my ambulances. Diesels and gas burners. While everybody else is blowing theirs up, ours are running strong. Our 2010 trucks have over 150000 miles on em and hardly use oil. Those are V10s and 6.6s. Our 7.3s have over 350000 miles and hardly burn oil. Still running strong. I change the diesels at 5000 mile intervals and the gas burners at 4000. Use motorcraft filters. Regular 5w30 on gas burners and rotella 15w40 on my diesels. I use 2 quarts of lucas on the gas burners and 3 on the diesels. I use 2 quarts synthetic lucas and mobile1 5w30 synthetic in my 04 5.4 and have 197000 miles and still runnin strong. 5000 mile intervals.

nrd10

Now when you all say a quart of Lucas are you substituting a quart of oil for that quart of Lucas or adding the quart of Lucas after the 7 quarts of oil? Just a bit confused on the mixture.

alsatropine

iTrader: (2)

Yes substituting lucas for oil.

nrd10

Just an update. Had the truck looked at last week and the oil leak is coming from higher up than the main seal. Mechanic said it looks like it's from the seal behind where the oil filter screws on? Never knew there was a seal around there other than the filter itself. Any thoughts?

shuss03

I had to change the gasket on mine. The engine coolant runs through the filter housing as well so its a messy fix. I think its a common place for it to leak.

Texan Ford

Make sure you get the right lucas for the oil you run. If you run synthetic oil, there is a specific lucas for that. And yeah don't use motor flush if you have any leaks of any kind, that is one of those products that is great to use every oil change if you start while the engine is young in miles. But once your engine gets older, you run the risk of unclogging any leak holes that the older oil has conveniently clogged for you.

as an automotive repair industry professional, my true suggestion is to always fix the problem properly. Lucas is a temporary fix, or a delayer of the inevitable. Best bet is to find a reputable repair shop to do it, when you have a lift handy, it's really not that difficult of a repair, maybe and hour or so tops.

hope this helps

nrd10

Well I had them fix the leak. I still have yet to figure out what this gasket is or does. Truck has been sitting at the shop for about a week now so I'll see if that fixed it.