oil consumption problem???

**Rodeheaver's** · 10-18-2007, 01:41 PM

do you 4v guys and 2v guys have any problems with oil consumption??? i have a customer with a 96 4v and he claims it usees 1-1.5 qts oil between oil changes, he was using synthetic and it used 2-2.5 qts, then i had him change to castrol gtx and it reduced the consumption.. and this cas has NO leaks what so ever?? any input is appreciated.. approx 25k miles

**383taman** · 10-18-2007, 02:28 PM

Call Bob at ICS he has had a motor out of a cobra that drank oil. (412)366-1009

**Chris00GT** · 10-18-2007, 02:35 PM

No never had any problems with my 2000 GT. It's like half a quart if that every oil change. I'd look and check out the PCV setup. I'd say maybe valve seals, but with the low milage I doubt it....hmm you have a good puzzle on your hands.

**Pure Stock** · 10-18-2007, 02:58 PM

what kind of headers on it?

**Rodeheaver's** · 10-18-2007, 04:01 PM

Originally Posted by Pure Stock

what kind of headers on it?

bbk???

**speedracer** · 10-18-2007, 06:49 PM

My car has 17,000 on it and I havent added any oil to it besides regular oil changes.

**Wolfpack Speed** · 10-18-2007, 08:04 PM

Originally Posted by Rodeheaver's

do you 4v guys and 2v guys have any problems with oil consumption??? i have a customer with a 96 4v and he claims it usees 1-1.5 qts oil between oil changes, he was using synthetic and it used 2-2.5 qts, then i had him change to castrol gtx and it reduced the consumption.. and this cas has NO leaks what so ever?? any input is appreciated.. approx 25k miles

mac long tubes are notorious for causing that. my 03 gt with 2k miles burned oil like it was cool after the mac lt install, you should have seen it smoke out the dyno bays at kauffmans and stropes

**Ares** · 10-18-2007, 08:13 PM

My 2000 Gt when I had it used 1.5 qts just going to Bradenton from Cranberry. About 1400 miles.

My 2004 GT seems to use a little oil but has no leaks and doesn't smoke that I have noticed. I run 5w20 Royal Purple. Course high rpm launches may be to blame as the cams whip the oil into a nice mist to get pulled into intake.

**George C** · 10-18-2007, 10:28 PM

Originally Posted by Wolfpack Speed

mac long tubes are notorious for causing that. my 03 gt with 2k miles burned oil like it was cool after the mac lt install, you should have seen it smoke out the dyno bays at kauffmans and stropes

how do headers cause oil consumption?

From my experiences with motors going thru that much oil. It could be several issues. could the the PCV system sucking in oil, or it could be a cracked ring gland. these are two common findings with the LSX community and im sure its the same for a Mod motor

**stieny** · 10-18-2007, 10:32 PM

Originally Posted by Quik

how do headers cause oil consumption?

From my experiences with motors going thru that much oil. It could be several issues. could the the PCV system sucking in oil, or it could be a cracked ring gland. these are two common findings with the LSX community and im sure its the same for a Mod motor

From what I've heard, because of Mac's poor build quility, the slag inside the header from the poor welds were getting sucked back into the motor and scoring the cylinder walls causing bad blow by.

**George C** · 10-18-2007, 10:37 PM

Originally Posted by stieny

From what I've heard, because of Mac's poor build quility, the slag inside the header from the poor welds were getting sucked back into the motor and scoring the cylinder walls causing bad blow by.

thats the first i heard that. if thats the case then wouldnt that be in the installer? I mean I dont install a part and not inspect it before installing. and if it is scoring the motor then i would file a lawsuit against Mac. Now if it did score the walls then you need to rebuild motor.

**coralcoupe1993** · 10-18-2007, 11:20 PM

My 2000 GT ate qt every 3k. My 99 Crown Vic P71 (was non PI) DRANK OIL LIKE MAD. 1.5 every 3K like nothing. Not sure why. My Push rod motors dont use oil. Guess I will see what the Linclon does.

**Rodeheaver's** · 10-19-2007, 02:57 PM

this is a mystery to me, i rebuilt this engine 25k ago, from top to bottom, it has no leaks at all and blows no smoke, but it still eats 1-1.5qts between changes. i have ben told by some people that there cars just use oil, my 5.4l truck eats a qt between changes but it has 180k on it..

**Pure Stock** · 10-20-2007, 12:50 AM

Originally Posted by stieny

From what I've heard, because of Mac's poor build quility, the slag inside the header from the poor welds were getting sucked back into the motor and scoring the cylinder walls causing bad blow by.

This was happening to a few people and was discussed in length on the corral. MAC was aware of the mishap and claimed they rectified the issue.