The oil consumption problem:

Some observations, the 4Th generation Acura Tl’s and mostly the SH-AWD with MT and some with AT have excessive oil consumption; from a half to a QTY between 1000 and 2000 miles or beyond.

Investigating the issue for quite a while I observed a strange phenomenon, 3 fellow Acura 4Th generation drivers with the 3.7 L engine all-consuming about a half to a QTY between 1000 and 2000 miles and do not consume any oil the first 500 – 600 miles. (All changed Oil and Filter.)

So in the next 400 to 1600 miles the oil consumption varies between half a QTY to a 1 QTY, in other words the oil starts burning in some 3.7 L engines after 500/600 miles average. Testing done with 5W-20 Synthetic oil from different brands, all have similar results.

I always thought it was the piston rings; maybe some other factors are playing a roll. Looks like oil is degrading fast (Excessive heat in some of the engines.)

Some opinions welcome.

 

It is more than just the 4th Gen TI and I don't believe SH-AWD or MT or AT have anything to do with it. I also don't believe the oil is degrading. Todays oils will not degrade in any modern engine.

I believe that the semi synthetic oil being used is too slick and the engine is not actually wearing in. My last few new cars I would put in a standard (dino) detergent oil such as Valvoline 5w30 and change oil after 1000 miles, then 3K, 6K, 9K, 12k and then move to Mobil 1 permanently. I feel the standard detergent oil will allow enough cylinder wear to fully seat the rings. So far, none of my cars use oil. I just purchased a new TLX a few days ago and I'll keep you posted on how it does with oil consumption.

 

Tsx also has oil consumption.

People initially said only 6Mt

But wagons and auto sedans reporting excessive oil consumption too

 

Mine will use 1/2 to a full quart or so every 4000 miles roughly. But I've noticed the same thing you've observed. For the first 1000 or so miles, no movement on the dipstick. The more miles on the oil the more rapid the rate of usage. So most of the usage occurs in the last 1000 or 2000 miles. It's also not uniform, but I can't tell what sort of conditions make it worse or better.


At the end of the day, it's not much and so long as it doesn't get worse, it doesn't bother me. It's still a curious issue though.

 

Exactly, some engines more than others; hence Friction equals Heat.

(NOACK) Determines the evaporation loss of lubricants in high-temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, and increased oil consumption, wear and emissions.

 

I've said this in another thread but Amsoil Signature 5W-20 has a low 6.3 NOACK. I would be curious of the results if this oil is used on those engines with oil consumption issues.