Oil change at dealer. 5 vs 6 quarts. Not a repeat thread. LOOK!

[mgroeger]

I've noticed I get two readings on the dipstick at times. One side will show oil is where it should be and the other shows halfway. If I spin the dipstick then remove it I get the correct measurement.

I've experienced this on the Jeep and pretty much every vehicle I've owned as well.

Sponsored

 

[smokinjeep]

Hmmmm... I've never heard about checking oil at operating temp... transmission fluid yes, oil no. Tranny fluid significantly expands when hot, oil not so much.
I've read it cold, hot, luke warm, temped, chilly, freezing, boiling, 58.3 degrees, 98.6 degrees and everywhere in between and it's ALWAYS been the same... top of the hash.
Actually this goes for every vehicle I've owned for the past 30 years. I have never once seen it read differently based on the temp of the engine. As long as all of that oil has drained down into the pan it read the same.

Now you could calculate the Volumetric Expansion of oil using it's volumetric coefficient of expansion number of .00039 using the formula below. BUT be careful since that coefficient is ONLY for UNUSED oil!!! This means you will need to recalculate this expansion every week using a different coefficient since it will change as the oil ages. Now I can't give you everything so you will need to go figure out that coefficient yourself.

OR one could simply use the 5 QT jug, OR go to a dealer who knows what the heck they are doing, and call it a day

Nurd.

 

[californiajeeping]

The tech did say it takes 6 quarts. He looked it up in the Amsoil book. So maybe this is why dealers are putting in 6 quarts, because it is listed incorrect in the Amsoil book?

Amsoil has always listed 5 quarts for 3.6L JLs.

@smokinjeep Do you have a picture or screenshot of where the Amsoil book says 6 quarts for JLs? The Amsoil website says 5 quarts for JLs. Also, I called a few quick oil change places just out of curiosity and all of them said the JL takes 5 quarts. Either Amsoil's printed book is wrong or the Jeep dealership's tech is a idiot.

 

[blnewt]

@smokinjeep Do you have a picture or screenshot of where the Amsoil book says 6 quarts for JLs? The Amsoil website says 5 quarts for JLs. Also, I called a few quick oil change places just out of curiosity and all of them said the JL takes 5 quarts. Either Amsoil's printed book is wrong or the tech is a idiot.

I'm guessing the tech was using JK info, just like the majority (at least it seems that way) of Jeep service depts.
Idiocy is not in short supply regarding this issue I'm afraid.

 

[mgroeger]

Nurd.

You misspelled...

 

[smokinjeep]

You misspelled...

LOL

 

[MSteeves]

No it doesn't, 5 qts will put it right at the top of the hash marks.

Indeed it will. I drain the oil from the pan; change the filter; then add a 5 quart jug and it fills right to the top of the hash marks. Just like you say. Yup. Every time! Amazing.

 

[mgroeger]

Indeed it will. I drain the oil from the pan; change the filter; then add a 5 quart jug and it fills right to the top of the hash marks. Just like you say. Yup. Every time! Amazing.

It's because we have magical Jeeps

 

[Paluss]

@smokinjeep Do you have a picture or screenshot of where the Amsoil book says 6 quarts for JLs? The Amsoil website says 5 quarts for JLs. Also, I called a few quick oil change places just out of curiosity and all of them said the JL takes 5 quarts. Either Amsoil's printed book is wrong or the Jeep dealership's tech is a idiot.

I don't understand why a tech would look it up in an Amsoil guide/website versus using the Jeep Factory Manual for the JL model?????

 

[Doug Huse]

This has been a fun thread. I've always heard that "safe" = "safe". Not that half "safe" = unsafe!

 

[Rosco1983]

Who cares what the book says the oil capacity is just learn to read a dipstick. If the oil is at the bottom of the hash marks then you add exactly 1qt and if it's in the middle add half a qt. Those has marks represent 1qt. So just add 5qts start the engine and let if run for about 10 to 20sec and then let it set for a bit and check your oil dipstick. Even if they have to add .5qts then they will charge you for a hole quart so it will show up 6qts. on your ticket. The book may say 5qts is the refill amount but that's the key word (refill). If you set there and let it drain tell every last drop is out then you can get another half to one full qt still out. I try to get every drop I can out before i put the plug back in and i put about 5.5qts back in. I know all the shops I have worked in we are all just trying to get to the next car so you just drain it tell the oil is just a small stream and put the plug back in and fill it up and that would be considered a refill amount. I have seen oil drain 20 to 30min before there isn't even a drop anymore but no shop has time for that and that's not even necessary. Stop overthinking this hole thing and just learn to check your own dipstick before you go and complain to the dealer and see if the oil is at the top of the hash marks. Or avoid this hole thing and change your own oil. Heck it should only take 15 to 30min if you know what your doing. It takes me longer getting my tools set up and a drain pain then changing the oil. Keep in mind even a engine in very good shape will use about .5qts every 5k so if your not filling it up all the way to the top of the hash mark it will be that much lower at the next oil change.

 

[ZEN357]

There have been so many people out there where the dealers are putting in 6 qts that they are getting tags to put near the oil fill. For $7 I got one made for the extremely rare occasion where someone else will do my oil change.

And yes... there have been people with a tag on like this and the dealership STILL puts 6 qts. in.

That's because the dealerships never think they are wrong and are only there to rip people off. Find a good local NON-FCA affiliated garage that you can build a good relationship with and trust to take your vehicles for general maintenance.

 

[mgroeger]

Keep in mind even a engine in very good shape will use about .5qts every 5k so if your not filling it up all the way to the top of the hash mark it will be that much lower at the next oil change.

Ummmm... NO. An engine in very good shape should not burn .5 qts every 5K unless you are beating the heck out of it and reving the engine very hard to redline. 37k miles on the Jeep and 5qts puts it at the top of the hash and 3k - 6k later it's still right at the top of the hash.

 

[mgroeger]

That's because the dealerships never think they are wrong and are only there to rip people off. Find a good local NON-FCA affiliated garage that you can build a good relationship with and trust to take your vehicles for general maintenance.

I do all my on general maintenance, repair work (not under warranty) and stunts

 

[JEEPIDON]

Had dealer change oil today. I have very good relationship with them. I told the sales manager 5 quarts only. He personally took it back to instruct the tech.

He comes and gets me 30 min later. We check dipstick together and it was smack in the middle of the 'safe zone'. This was with 5 quarts. The tech did say it takes 6 quarts. He looked it up in the Amsoil book. Me and the manager again confirmed 5 quarts in owners manual. So maybe this is why dealers are putting in 6 quarts, because it is listed incorrect in the Amsoil book? Also, why would 5 quarts only put it in the middle of the safe zone? Shouldn't 5 quarts put it at the top of the safe zone? He is going to ask the Fiat rep why 5 quarts only puts it in the middle of the safe zone.

Oh, we also verified the gun used was dispersing the correct amount of oil. Anyone have any ideas?

Ummmm... NO. An engine in very good shape should not burn .5 qts every 5K unless you are beating the heck out of it and reving the engine very hard to redline. 37k miles on the Jeep and 5qts puts it at the top of the hash and 3k - 6k later it's still right at the top of the hash.

Honestly I don't understand why there are dealers out there out of the loop. I just had my wife's Jeep JLU Sahara and my Jeep JLU Rubicon serviced with oil changes, rotated tires and of course the V41 steering damper change. On both invoices (hope to attach a photo) you can clearly see 5 quarts of #68283520AA Oil 0w20 on both. Also, I checked both dipsticks and it's right where it should be on both. Please enlarge the image and you can see both invoices. The service manager showed me that the order is created and by the VIN he selects it prints the service order showing to use 5 quarts and 1 oil filter. What the hell are the other dealers using, cocktail napkins to figure it out?

Please feel free to print and show your dealers that there is at least one dealer doing this correctly!

Good luck,
Charlie

Sponsored