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  #745  
Old 04-17-2015, 12:10 PM
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Quote:
Originally Posted by NetworkTV View Post
Unfortunately, the dipstick is never 100% accurate. The problem is, there's always oil stuck up in the crevasses of the engine as well as some that stays in the filter. However, it's a good guide to know if you're too low since being in the good range will always mean there's enough oil in the engine.

Checking the oil level on a hot engine makes the problem worse since less oil has made it's way back down to the pan. Once the engine sits for several hours, it's closer to the proper level. That's why you want to check your level on a cold engine before driving anywhere.

The same goes for tire pressure: check them cold and use the number on the door panel, not what's on the tire. The number on the tire is the maximum air pressure it should ever be, not the proper pressure.

Now, when you change the oil, you want to do it on a warm engine. Not only does that stir up the sludge and metal particles so they can drain, it also pre-lubes the engine so you aren't starting dry after a change.
Yes thanks im well aware of all that ive been chaging oil for 30 years but there is a know issue with the dip stick reading wrong on some of these 5.7s. You could let them sit for days and still read add a quart after putting the recomended 7 quarts in. One of the dealers even opened a star case on it. Dipsticks are estimates and not exact but being wrong by a whole quart is not right. Its not isolated and has been noted by many.

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  #746  
Old 04-17-2015, 12:27 PM
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Re: What did you do to your WK2 today?

So, what is the average user supposed to do. This could be an issue if the oil level is low and the engine suffers some damage. If the user relies on the dipstick for the level, and the dipstick is incorrect, how is the person to know what to do?
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  #747  
Old 04-17-2015, 12:32 PM
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Re: What did you do to your WK2 today?

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Originally Posted by BirchyBoy View Post
So, what is the average user supposed to do. This could be an issue if the oil level is low and the engine suffers some damage. If the user relies on the dipstick for the level, and the dipstick is incorrect, how is the person to know what to do?
My advice...and it's not from a mechanic, so take it as you will:

Fill with what the manual says, then check the level after you have everything buttoned up. Use that as your correct level on the dipstick.

Assuming the manual is correct, of course....

Based on what Silvermax is saying, it sounds like the 5.7 dipstick is too short. Maybe they were using ones meant for the 3.6...
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  #748  
Old 04-17-2015, 12:33 PM
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Re: What did you do to your WK2 today?

Quote:
Originally Posted by NetworkTV View Post
My advice...and it's not from a mechanic, so take it as you will:

Fill with what the manual says, then check the level after you have everything buttoned up. Use that as your correct level on the dipstick.

Assuming the manual is correct, of course....
So, if it leaves the Jeep dealer at the halfway point, add back as necessary to that point.
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  #749  
Old 04-17-2015, 12:40 PM
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Re: What did you do to your WK2 today?

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Originally Posted by BirchyBoy View Post
So, if it leaves the Jeep dealer at the halfway point, add back as necessary to that point.
Assuming they are putting in the recommended 7 quarts (and your invoice for the oil change should say that), wherever that shows up on the dipstick should be your "full" mark.

The problem here isn't so much that you'll be low. If the correct amount still reads low and you add more to get it to read correctly on the dipstick, you'll be over full.

That can be bad too since it can affect your filter performance, ruin seals and o-rings and blow by your piston rings.
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  #750  
Old 04-17-2015, 12:56 PM
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Quote:
Originally Posted by BirchyBoy View Post
So, what is the average user supposed to do. This could be an issue if the oil level is low and the engine suffers some damage. If the user relies on the dipstick for the level, and the dipstick is incorrect, how is the person to know what to do?
Probably not going to be off by enough to cause you serious problems. If anything you will be a little overfilled following the dip stick. Generally overfilling is not good but this isnt an extreme amount. What i have found is that if i put in 8 quarts that brings it to(not over) the full line, it will burn off down to the halfway point on the dipstick and then not use any at all until next oil change. So i reasoned to just put in 7.5 knowing it wont use any at that halfway point and because i really didnt like leaving it on add a quart after doing an oil change. Understand im not saying yours or all of the 5.7s are like this but it has been reported by a fair number of people to include 2015s. The right amount probably is the recommended 7 some just have f-ed up dipsticks or dipstick tubes.

I asked same question as you lol. You get your oil changed, dealer puts in 7 quarts you take a trip few hundered miles fown road gas staion checks oil says you are a quart low do you want me to add? You say sure, and now you are overfilled a quart, right? lol.

Im sure a tsb will emerge at some point but Ill stick at a 7.5 fill for now which is halfway on the hashed area on the dipstick for mine anyway.
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  #751  
Old 04-17-2015, 01:08 PM
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Re: What did you do to your WK2 today?

Quote:
Originally Posted by BirchyBoy View Post
So, what is the average user supposed to do. This could be an issue if the oil level is low and the engine suffers some damage. If the user relies on the dipstick for the level, and the dipstick is incorrect, how is the person to know what to do?
That's just it. I'm not seeing a solution here. If the manual say's 7 quarts with a filter, but your dipstick say's you're a quart low, that is going to make me feel uncomfortable. How hard is it to manufacture a dipstick that reads correctly for God's sake?

We've got computers on these vehicles that make what the Lunar Lander had look like an Abacus. But they can't make consistent dipsticks? And these engines are far more oil critical, (both type and amount), than what we had 35 years ago. Inexcusable for what they're charging for these cars.
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  #752  
Old 04-17-2015, 01:23 PM
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Quote:
Originally Posted by billt View Post

That's just it. I'm not seeing a solution here. If the manual say's 7 quarts with a filter, but your dipstick say's you're a quart low, that is going to make me feel uncomfortable. How hard is it to manufacture a dipstick that reads correctly for God's sake?

We've got computers on these vehicles that make what the Lunar Lander had look like an Abacus. But they can't make consistent dipsticks? And these engines are far more oil critical, (both type and amount), than what we had 35 years ago. Inexcusable for what they're charging for these cars.
Lol yes a few of us already racked our brains on this in another thread a while ago. There was never really any resolution on this and since peoples engines havnt been blowing up there wasnt much traction to find the root cause. I figure with 7.5 at a half too much or a half too little probably doesnt matter much but a whole quart to full or to low im less comfortable with that.
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  #753  
Old 04-17-2015, 01:25 PM
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Re: What did you do to your WK2 today?

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Originally Posted by billt View Post
That's just it. I'm not seeing a solution here. If the manual say's 7 quarts with a filter, but your dipstick say's you're a quart low, that is going to make me feel uncomfortable. How hard is it to manufacture a dipstick that reads correctly for God's sake?

We've got computers on these vehicles that make what the Lunar Lander had look like an Abacus. But they can't make consistent dipsticks? And these engines are far more oil critical, (both type and amount), than what we had 35 years ago. Inexcusable for what they're charging for these cars.
I do agree that something like a dipstick should never be as far off as this appears to be.

However, I would disagree about modern engines being more oil critical.

Modern engines have far better cooling systems than older models, they have far better sensors to detect oil conditions and the oils are far better and longer lasting than previous oils. That's why you don't have to change them as often. Where every 3000 miles used to be the mantra, modern cars can go 10,000 miles or more between changes.

In fact, you could probably get away with barely changing it at all in a 5 year span and still have a well running vehicle. I would recommend that kind of technique, but the point stands: engines are less oil critical than they used to be, even 15 years ago.

I guarantee that if you pitted a modern Cherokee using modern oil with one from the 1980's (with 1980's era oil formulation), you could drain both and the modern engine would run far longer before seizing.

Further, I'd bet the modern Jeep would provide a low oil warning sooner.
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  #754  
Old 04-18-2015, 04:53 AM
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Re: What did you do to your WK2 today?

I wouldn't be so sure about the oil. It is more important as they often have a lot more pollution gear, higher power levels etc.
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  #755  
Old 04-18-2015, 06:34 AM
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Re: What did you do to your WK2 today?

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Originally Posted by Boxheadmr View Post
I wouldn't be so sure about the oil. It is more important as they often have a lot more pollution gear, higher power levels etc.
Pollution gear has pretty much nothing to do with engine oil since it involves systems that do their work before fuel enters the engine or after it's been burnt.

If you're talking more horsepower, then that's not true either. A Duesenberg Model J from the 1930's could have up to 320hp on cast iron 3-speed engine that could pretty easily reach 120mph. The 60's muscle car era was pretty much filled with cars with far more grunt pulling them compared to today's cars.

If you're talking electrical power, that's a separate system, too. In fact, you can drive the car without that power being generated for short distances.
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  #756  
Old 04-18-2015, 06:48 AM
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Re: What did you do to your WK2 today?

Back to what we've done. Yesterday the doorbell rang just as we were getting ready to leave. It was Fed Ex with my Dash Topper. I took it out of the box, and it really looked good. I put it in and it fits perfectly. The perforated faux Suede looks very real. All the stitching was nicely done.

So now I'm done with all of my "improvements". Nothing left to do but drive!.............. And worry about my dipstick level!
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