Originally Posted By: BlueLesPaul2006
This is just my opinion.
I had a 2008 Wrangler X and I can share my experience. In short the story ends with me trading the Jeep in for a 2012 with the new pentastar engine. So if you do not read all of this my advice is to get rid of that Jeep and get something newer with the 3.6L pentastar if you are able to afford that.
One day I was driving and noticed my oil pressure light. It just flashed and went away. I thought nothing of it and kept on driving. A short while later the light flashed again. I knew this was no mistake and something was wrong. I pulled over and with the engine running I pulled out a dry dipstick. SInce I was far from home I had no other option but to take it to the dreaded Jiffy Lube. It turns out that my Jeep was 3qt low. I had 3 out of 6 quarts in that engine.
I researched and found that Jeep had contracted their piston assembly to Mexico and the mexican workers installed piston rings upside down and/or with the gaps all lined up. This causes blow by and oil consumption. I also read there are a few fixes.
First I tried to change the PCV valve no luck for me. Though others said it helped them. I still found a lot of oil in the tube.
Second I tried to seafoam the engine hoping to clean up the pistons to get a better seal. This actually made the problem worse since the cleaned pistons blew by more. My oil consumption wend from 1qt burn in 1200 miles to 1qt burn every 800 miles. (good plug for seafoam as actually working though)
Third I tried to change different weights and types of oil. I used conventional, synthetic, and HM. Nothing helped. Yes thicker oil did slow down the burn a bit since it lessened the blow by but in reality the success was marginal.
Forth I tried the engine restore that is supposed to seal up scratches and things. No help.
Fifth Since I was tired of driving around with oil all the time I traded the Jeep in.
My 3.6L pentastar does not burn one noticeable drop of oil and the engine has much more power. If you really want to fix the issue and just cant afford or dont want to trade the Jeep in the only course is to replace the engine. The girl who bought my traded in Jeep from the dealer lives in my town and her father replaced the engine and now she is fine.
Its just food for thought and I hope that you can get a fix for your engine.
We tried PCV as well - no difference.
Originally Posted By: crazyoildude
We see the 3.6 in my engine shop more and more mostly for head work they sure don't build them like the older 3.3's that ran forever.
One specific year, though. As long as someone has a 2013 it should be fine. Or newer. I love the 4.0, but the Pentastar engine just has more torque available everywhere.
Originally Posted By: bullwinkle
Originally Posted By: Miller88
Originally Posted By: stchman
The thing is Chrysler vehicles consume oil.
Chrysler has adjusted its acceptable motor oil consumption guidelines for 2012-2013 Chrysler, Dodge and Jeep gasoline vehicles (Chrysler Bulletin #09-001-12 Engine Oil Consumption Guideline):
- First 50,000 miles of engine life: one quart per 2,000 miles
- Engines with over 50,000 miles: one quart per 750 miles
- Aggressive driving conditions: one quart per 500 miles
I can MAYBE see i quart ever 2K miles, but one quart EVERY 750 miles. Lets say you change the oil every 7500 miles, Chrysler thinks using 10 quarts during that time span is acceptable??!!!!!!! If your vehicle is drinking a quart every 750 miles and not leaking, something bad is wrong.
The '08 we had was up to 1 quart per 650. Plugged up the cats so bad it barely had any power, too.
This was under Daimler?? Hard to believe that even a quart every 1500 would be acceptable under ANY warranty circumstances!
It was Cerberus era management.
