94StinkinLincoln

ok i got about 125 on my new 331 and i changed the oil. after about 75 miles it didnt use much oil. i checked it very time before i drove it. now today i had to put almost 2 quarts in it over about a total of 30 miles today. but like 5 of those miles was wot fun driving. its it normal for it to use that much oil up running it hard when its that new. before i changed the oil driving it the same it didnt use that much oil. i didnt see any major leaks it just looked like oil that dripped from stuff getting hot. i will have to take another look at it tomorrow.

67mustang302

It should not use that much oil. Is everything tight like the oil filter? No external leaks?

94StinkinLincoln

i got to make sure later today when i get home from work. i hope its something simple lol
its more than likely the oil filter since i kno the 2 drain plugs were tight.

hellion_79

did you see any smoke coming from the engine compartment?

5.0stanger

did your dip stick pull out? Out of the pan....

mattdel

so you have 250~ miles on a fresh stroker with HCI and your running WOT...

and you wonder where the oil is going?

67mustang302

I had my 302 at WOT like not even 15 minutes after I first fired it up, and it don't burn oil beyond the normal for an engine. If there's no external leaks there may be an assembly issue with it, improper cylinder prep, wrong ring/piston packageetc. Check the plugs to see if you're burning oil

945LSTANG

you are supposed to break it in. you guys are asking for problems.

VigCS

Actually, there isn't really a break in needed on a roller cam motor...if anything you'll want to go out and run the **** out of it to seat the piston rings. I'll get a link in a second.

67mustang302

What is break in though? How does driving an engine like an old woman for 500 miles help to break it in? If you have good rings that were installed properly with proper cylinder preperationthey should be seated within a minute or 2 after initial startup(older rings would take longer to seat though, but technology has advanced). Also, you need to run some WOT in order to hammer out any high spots in the bearings if there are any, otherwise the bearings won't wear in properly until you do, whether it's 500 or 5,000 miles after initial startup. And by high spots being hammered, I don't mean crank/bearing contact, but that the bearing material(which on a street car should be MUCH softer than the crank) won't be completely round, and running WOT puts more force on the crank, and causes the oil wedge will shape the bearings to match that of the crankshaft's journals. Modern technology has relegated engine breakin with roller cams, good moly rings, proper bearing selection etc, to a 5-10 minute process. The majority of engine failures from going full power after initial startup can be traced to improper installation, improper part selection, failure to change the oil after initial startup(this is the biggest one, youMUST change the oil after the first 10 minutes or so of running in order to get assembly lube and bearing coatings etc out of the oil that clog the filter rapidly, causing the bypass to open and dump garbage into the engine) or running very tight bearing clearances(which will require a longer breakin period for the bearing to wear to enough clearance that they won't spin or get whacked by the crankunder WOT). Certainly running an engine easy for several hundred miles or more before goingWOTwon't hurt it, but it isn't really necessary if the engine is built and treated properly