LS1 Oil consumption????
Melting Slicks
Joined: Jun 2007
Posts: 2,172
Likes: 1
From: Sartell Minnesota
i used to have this issue until i went to a catchcan. I was getting about a quart every 3500 miles so when i got the catch can i thought maybe i'd be emptyin' the can every oil change. i haven't been suckin' more then an 1-2 oz each oil change. Idk if i got lucky and the oil PCV valve was just toast or what. It works great though
Also my LS1 intake manifold was DRIPPING oil almost when i pulled it off. Replaced with a great, clean LS6 and it's bone dry in there
Also my LS1 intake manifold was DRIPPING oil almost when i pulled it off. Replaced with a great, clean LS6 and it's bone dry in there
Race Director
Joined: May 2001
Posts: 15,323
Likes: 2,077
From: Guelph, Ontario
Mine has 102k on it and is also using about a quart every 4000 miles. I'm not too worried about it though, as long as it doesn't get any worse than that.
Instructor
Joined: Dec 2004
Posts: 115
Likes: 0
From: Extreme Madness
Oil issue
Had the same problem,that is until I tried this......
http://www.mobiloil.com/USA-English/...l_1_0W-30.aspx
Maybe you'll see an improvement too!
http://www.mobiloil.com/USA-English/...l_1_0W-30.aspx
Maybe you'll see an improvement too!
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Thread Starter
Burning Brakes
Joined: Apr 2006
Posts: 787
Likes: 2
From: Ontario
Had the same problem,that is until I tried this......
http://www.mobiloil.com/USA-English/...l_1_0W-30.aspx
Maybe you'll see an improvement too!
http://www.mobiloil.com/USA-English/...l_1_0W-30.aspx
Maybe you'll see an improvement too!
Ummmm....This is WHY I have the problem. I just changed to 0W30 Mobile....
I've heard some initial problems when switching over from conventional. I'll wait for the next oil change to see if there is an improvement....
THX
Drifting
Joined: Feb 2007
Posts: 1,993
Likes: 7
From: LaPine Oregon
Oil consumption issues........
http://www.rjsmith.com/gm-894549.html
The basis of the LS1 oil consumption issue is blow-by from the crankcase caused by poor cylinder bore tolerances and the thin flat faced piston rings. Out of round and tapered cylinder bores along with driving styles ( operating at high engine speed with no load) increased the oil consumption in the LSx engines. This oil issue came to a head with the introduction of the LS6 .
You don't indicate if you have manual or auto tranny. That also makes a difference in oil consumption.
The GM TSB allows for a band-aide fix for 1999-2001 LSx engines with that band-aide following thru on 2002-2004 M/Ys production.
The acutal fix is with the Gen 4 LS2 block , where the siamized cylinder bore cooling passeges were opened up to eliminate the hot spots that the Gen 3 engines experienced ( and which contibuted to the out of round cylinder bore condition that then over taxed the thin, flat faced, low tension piston rings , hence the blow-by).
A direct answer to your question of oil consumption of 1 quart in 4000 miles is that is normal or better.
The basis of the LS1 oil consumption issue is blow-by from the crankcase caused by poor cylinder bore tolerances and the thin flat faced piston rings. Out of round and tapered cylinder bores along with driving styles ( operating at high engine speed with no load) increased the oil consumption in the LSx engines. This oil issue came to a head with the introduction of the LS6 .
You don't indicate if you have manual or auto tranny. That also makes a difference in oil consumption.
The GM TSB allows for a band-aide fix for 1999-2001 LSx engines with that band-aide following thru on 2002-2004 M/Ys production.
The acutal fix is with the Gen 4 LS2 block , where the siamized cylinder bore cooling passeges were opened up to eliminate the hot spots that the Gen 3 engines experienced ( and which contibuted to the out of round cylinder bore condition that then over taxed the thin, flat faced, low tension piston rings , hence the blow-by).
A direct answer to your question of oil consumption of 1 quart in 4000 miles is that is normal or better.
Last edited by dieseldave56; Feb 3, 2009 at 07:58 AM.
Thread Starter
Burning Brakes
Joined: Apr 2006
Posts: 787
Likes: 2
From: Ontario
[QUOTE=dieseldave56;1568799887][URL="http://www.rjsmith.com/ The basis of the LS1 oil consumption issue is blow-by from the crankcase caused by poor cylinder bore tolerances and the thin flat faced piston rings. Out of round and tapered cylinder bores along with driving styles ( operating at high engine speed with no load) increased the oil consumption in the LSx engines. This oil issue came to a head with the introduction of the LS6 .
You don't indicate if you have manual or auto tranny. That also makes a difference in oil consumption.
The GM TSB allows for a band-aide fix for 1999-2001 LSx engines
A direct answer to your question of oil consumption of 1 quart in 4000 miles is that is normal or better.[/QUOTE]
My vette is a 99 6 spd that I drive conservatively and my truck, 2003 Sierra 5.3 is an auto overdrive with 3.73 rear. The truck I drive at no more than 2000 RPM to obtain some sort of mileage figure with and the Vette I drive to work on the highway in 6th gear 30 miles.
They both use more than what I would call "normal" amounts of oil.
THX
You don't indicate if you have manual or auto tranny. That also makes a difference in oil consumption.
The GM TSB allows for a band-aide fix for 1999-2001 LSx engines
A direct answer to your question of oil consumption of 1 quart in 4000 miles is that is normal or better.[/QUOTE]
My vette is a 99 6 spd that I drive conservatively and my truck, 2003 Sierra 5.3 is an auto overdrive with 3.73 rear. The truck I drive at no more than 2000 RPM to obtain some sort of mileage figure with and the Vette I drive to work on the highway in 6th gear 30 miles.
They both use more than what I would call "normal" amounts of oil.
THX
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I'd say that is not bad at all. Heck, my '00 with 11K miles was using a quart every 1200 miles. Had the dealer do the ring replacement and problem solved.
