The Mobil rep in mty area the U.P of Michigan. Runs Mobil 1 to 25k in a 150,000 mile buick century of coarse being a rep the oil get checked when its changed. If you call Mobil and ask them about changing filters before the oil they will tell you not to. The reason being is if you are running a synthetic oil you are reducing wear metals so the filter isn't plugging as fast as a mineral type oil. I run Mobil 1 in everything I own from the air compressor in the shop to the snowblower all the trucks and cars and motorcycles. If you had seen what Mobil prevented at one of our customers property'* you would run Moboil in everthing also.
A quick run down take a 2500 hp 16 cylinder diesel in a 240 ton dump truck load it to the gills and when its coming out of the pit drain all of the oil out of the engine. Really bad scene since this engine had 30 hours on it a cost about 225,000 dollars. I went to the mine and checked things over put in about 48 gallons of oil in a 65 gallon system and started the thing up. it has since ran to 20,000 hours when it was rebuilt without any oil related failures at all.
That my friends sold me on a synthetic oil
Hollywood

THe k&N oil filters have something inside that eliminate dry starts. It prevents all the oil from leaking back down to the oil pan.

hi

thats just the anti drain back valve. you'd get the same with a super tech, fram or what have you.

i, personally, change my M1 out at 6000 mi, although it is possible to go further. this current fill will be analyzed by blackstone in may.

never tried M1, but ive gone 5k on old school stuff. Is M1 okay to use on 150k+ mile engines?

Run an oil cleaning solutino through it first. If you get leaks then.

Synthetic oil isn't bad, but it cleans out the crap that dino oil leaves, or fills in leaks with

I'm personally running an AC Delco filter right now. No pressure problems. But I may switch to a Wix filter next change

NAPA filters are the same as Wix, except for the packaging FYI.

splain this oil flush out method and what product to look for. ? I assume it takes two filters. Dump old oil, put new oil & flush, one new filter. Drain, put in Mobile 1 and new filter ?

Do you guys use the larger filter ? what is it PF 51 ?

hi

i use auto-rx to clean out engines. its safe, doesnt contain any non-lubricating kerosene, and uses esters to do the heavy cleaning.

here is the site, go to "INSTRUCTIONS" on the home page...for the particulars.

http://www.auto-rx.com/


i used dino Penz 10w-30 for my 2 stage flush.

I use the PF52 now, its the larger version of the standard PF47. These are Delco'*, and usually I use Baldwins, but any premium filter brand will do the trick. However, that doesnt necessarily include the orange ones... :(

I used mobile 1 in my cars, but since the new engine was put in, I was told to use standard oil for the first 10,000 miles or so. i was to change the oil at 1000 miles, (which I did) then 3000 there after till around 10k, then i could switch to synthetic. What do you guys think?

hi

thats for the "break in " period. i 'd probably defer the synthetic lube until after the engine is "broken in". Perhaps a lab analysis at about 6k, and again at 9k would establish a trend in wear levels from which you could base your choice of lubes on?