Article: Possible fix for 3.6

[roaniecowpony]

Sometimes I wonder why I'm getting updates to threads that I know nothing about, like in this case the 3.6L V6 in the Wrangler, and then I go up and I look at the topic Creator and I realize it's me...

"I don't remember doing that!"

As I've gotten old, I find that people greet me and act like they've known me before, and I have no clue who these pleasant people are. But they're nice to me, so... who am I to tell them they're in la la land.

Sponsored

 

[mwilk012]

I have maybe half a million miles on LS and LT engines. None of them shit the bed. One is still chugging along well beyond 300k and 25 years. But one little foray into the 3.6L and it shits the bed at 34K miles. A friend with a jeep shop who also races and recreates in jeeps admitted these engines are not all that reliable. Just my experience. YMMV

I would go out of business if it wasn’t for bad GM engines. Your sample size is small.

 

[Deleted User 38384]

I have maybe half a million miles on LS and LT engines. None of them shit the bed. One is still chugging along well beyond 300k and 25 years. But one little foray into the 3.6L and it shits the bed at 34K miles. A friend with a jeep shop who also races and recreates in jeeps admitted these engines are not all that reliable. Just my experience. YMMV

I get it's my lifestyle, but "well beyond 300,000 and 25 years" is ridiculous to me.

I did 200,000 plus miles on my Toyota Camry in 7 years. I'm sure I've gotten more timid over time, especially as my life gets more stable, but still that's crazy low number.

I mean if I was single I'm sure my Jeep would be in the 70,000 mi range right now versus the 40,000 mi range it's in currently. By the time I hit the 25 year marker, I'm sure I'll be well into my second engine at that point and much further along, closer to 200,000 miles on.

The second I got a back seat in my jeep, and functioning AC, you better believe my Jeep is going to become the family vehicle. At that point, it will be getting a massive yearly mile increase compared to what it has now basically as my personal vehicle / daily driver.

 

[alphawolff]

I would go out of business if it wasn’t for bad GM engines. Your sample size is small.

Same with Stellantis. My job security is frankly insane, and my bank account is steadily increasing.

 

[mwilk012]

Same with Stellantis. My job security is frankly insane, and my bank account is steadily increasing.

I am thankful at least when we started up the brand new 5.3 today and it screeched, lost RPM signal, and died, it will only take about 1 day to get a replacement engine. FCS has been so far behind in parts availability compared to all other brands, it's worrisome.

 

[alphawolff]

I am thankful at least when we started up the brand new 5.3 today and it screeched, lost RPM signal, and died, it will only take about 1 day to get a replacement engine. FCS has been so far behind in parts availability compared to all other brands, it's worrisome.

Stellantis' backorder parts has gotten incredibly bad. Even basic things are 45+ days out these days. A lot of OEM suppliers are refusing to do business with them, many have even sued

 

[m3reno]

My 09 Dodge Ram 1500 had 327,000 miles before a valve dropped. The dealership just put in a new motor (still under factory warranty) and is currently tying to source out a part for a transmission, some type of shaft, waiting almost 2 months with no eta.

 

[roaniecowpony]

I get it's my lifestyle, but "well beyond 300,000 and 25 years" is ridiculous to me.

I did 200,000 plus miles on my Toyota Camry in 7 years. I'm sure I've gotten more timid over time, especially as my life gets more stable, but still that's crazy low number.

I mean if I was single I'm sure my Jeep would be in the 70,000 mi range right now versus the 40,000 mi range it's in currently. By the time I hit the 25 year marker, I'm sure I'll be well into my second engine at that point and much further along, closer to 200,000 miles on.

The second I got a back seat in my jeep, and functioning AC, you better believe my Jeep is going to become the family vehicle. At that point, it will be getting a massive yearly mile increase compared to what it has now basically as my personal vehicle / daily driver.

The LS that's beyond 300,000 miles was one I sold at about 8-9 years old with 225,000 of my miles, and a life long friend drove the rest, still going.

 

[roaniecowpony]

I would go out of business if it wasn’t for bad GM engines. Your sample size is small.

I think maybe the total population of GM engines is lar ... huge.

 

[mwilk012]

I think maybe the total population of GM engines is lar ... huge.

the Chrysler 3.6 is more common.

 

[bugnuker]

I agree and have also switched to European 5w40. It just makes scene.

Everytime I see a chart like this, I wonder if the temps on the chart are for outdoor temp, or oil temp. For example, 40c is not that hot. It can't be oil temp, right? It's outdoor temperature?
So what is the viscosity at 230f running temp? Do all the oils have the same viscosity as running temperature regardless of weight?

I'm in Arizona, and my garage is 100f at night. If you park outside under the sun, you could be seeing 140 degrees of oil temp before you start your car.

So with that said, I want more info on the charts. Summer Arizona will never see any temporaries below 75f. So according to this chart, I should be running 15w50.

Anyone have more info on temps and oil viscosity, such as sitting temperature (cold start temp) and running or operating temperature?

Again, all engines are running oil temps of 100c (212f) without question. And these temps are never on the charts. So it seems it's the cold start temperature listed on the charts. And if that is the case, then all of these weights have similar viscosity when running at operating temperature?

 

[Willys41]

Everytime I see a chart like this, I wonder if the temps on the chart are for outdoor temp, or oil temp. For example, 40c is not that hot. It can't be oil temp, right? It's outdoor temperature?
So what is the viscosity at 230f running temp? Do all the oils have the same viscosity as running temperature regardless of weight?

I'm in Arizona, and my garage is 100f at night. If you park outside under the sun, you could be seeing 140 degrees of oil temp before you start your car.

So with that said, I want more info on the charts. Summer Arizona will never see any temporaries below 75f. So according to this chart, I should be running 15w50.

Anyone have more info on temps and oil viscosity, such as sitting temperature (cold start temp) and running or operating temperature?

Again, all engines are running oil temps of 100c (212f) without question. And these temps are never on the charts. So it seems it's the cold start temperature listed on the charts. And if that is the case, then all of these weights have similar viscosity when running at operating temperature?

In my case like you I don't see many temps below 40f put do see 90f to 110f outside temps. Average temps are about 60f so 5w40 would be a better choice for me. My goal is better viscosity for the small needle bearings in the cam followers and cam shaft.
Other may want to use 0w30 or 0w40.
Here is some more info.
https://www.machinerylubrication.com/Read/31956/understand-oil-viscosity

 

[roaniecowpony]

the Chrysler 3.6 is more common.

in the scrap heap.

 

[Willys41]

Everytime I see a chart like this, I wonder if the temps on the chart are for outdoor temp, or oil temp. For example, 40c is not that hot. It can't be oil temp, right? It's outdoor temperature?
So what is the viscosity at 230f running temp? Do all the oils have the same viscosity as running temperature regardless of weight?

I'm in Arizona, and my garage is 100f at night. If you park outside under the sun, you could be seeing 140 degrees of oil temp before you start your car.

So with that said, I want more info on the charts. Summer Arizona will never see any temporaries below 75f. So according to this chart, I should be running 15w50.

Anyone have more info on temps and oil viscosity, such as sitting temperature (cold start temp) and running or operating temperature?

Again, all engines are running oil temps of 100c (212f) without question. And these temps are never on the charts. So it seems it's the cold start temperature listed on the charts. And if that is the case, then all of these weights have similar viscosity when running at operating temperature?

One other reason I went with 5w40 is 5w40 can have up to 1200 ppm ZDDP and 0w20/0w30/5w30 they only have up to 800ppm ZDDP.

 

[roaniecowpony]

One other reason I went with 5w40 is 5w40 can have up to 1200 ppm ZDDP and 0w20/0w30/5w30 they only have up to 800ppm ZDDP.

Larry, which 5w40?

Sponsored