foler

hello...
What oil consumption is normal for stock ls3 engine (ls376/480)? BMW M5 E39 have 1L=1qt per 600 miles .

redtan

iTrader: (5)

GM says a quart every 3000 miles is normal...but I personally think anymore than 1/2 a quart per oil change interval is getting excessive.

Death{AW}

iTrader: (6)

thats way to much. You have problem somewhere.

foler

where you find this info?

DietCoke

iTrader: (18)

Mine eats a QT every 400-600 miles depending on how hard I am on it. Has since day one when it was brand new. Doesn't burn oil, just inadequate pcv system. Hope to remedy that in the future

revtech101

My E38 which has the same motor as your E39 M5 consumed about a quart of oil every 6 months. I used it as my DD and put over 12k miles on it in a year.

foler

This is total ridiculous. If I want to go on travel I need to pack 100000000qt oil. This is stupid in 21 century.

331billet

The LS2 engine used low tension rings and caused some LS2 motors to consume more than a quart every 1000 miles. GM put out a TSB that any LS2 using more than a quart every 1000 miles, GM would replace the rings. this was back in 2007. in 2008 GM released another TSB that any LS2 motor using 1 quart every 1000 miles would get new pistons and rings. my LS2 used 1 quart every 1000 miles when it was new then at 18,000 miles used only 1/2 quart every 1500 miles.

I have not heard the same issue with the LS3.

sounds like u may have a warranty claim with ur LS376/480 crate motor.

do a leakdown test to see how much compression is getting by the rings or valve seals. usual is 2%-10% on a new engine. ur rings may not have seated properly, valve seals r bad, or oil is being pulled thru the intake, vaporized and burned. last item u would see carbon buildup on the floor beneath ur tailpipes.