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  #25  
Old 10-02-2014, 10:50 AM
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Re: Synthetic oil?

O:K - I am going to show my naivety here.

For you guys that change your own oil - synthetic - or - otherwise. What do you do about your transfer cases ... differentials .... etc? And are there still "grease zerks" on these modern vehicles?

So yeah - it's easy to change your own oil. But what about all the other fluids and lubes that are more "out of sight - out of mind"?

Signed Naive.

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  #26  
Old 10-02-2014, 03:54 PM
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Re: Synthetic oil?

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Originally Posted by Traveler0980 View Post
Must be something to synthetic oil, Mercedes and Corvette factory fill with Mobil 1 and recommend it for every fill. I'm with them.
Some engines are designed for synth.

Others, like one of those two, tend to do things for sheer snobbery charge trivia such as "And would good sir want nitrogen, krypton, or a blend in those overpriced tires?"
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  #27  
Old 10-02-2014, 04:42 PM
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Quote:
Originally Posted by Jayhawk47 View Post
O:K - I am going to show my naivety here.

For you guys that change your own oil - synthetic - or - otherwise. What do you do about your transfer cases ... differentials .... etc? And are there still "grease zerks" on these modern vehicles?

So yeah - it's easy to change your own oil. But what about all the other fluids and lubes that are more "out of sight - out of mind"?

Signed Naive.
If you follow the matenance guide for normal use I dont think differentials or transfer even ask for it until 120K so honestly i would'nt mess with that and just let them do it. Though in the past I have done those on my own some times they end up making more of a mess than I want to deal with. If you do anything out of the "normal " use like towing or harsh use Id be sure to change those more frequently then the 120K stated. I do change my own oil with synthetic but more for the time savings involved and just to know it was done correctly then the money savings. I can do it in 20 minutes or take it to the dealer and let a high school student make me wait around for hours and then mess up something that simple. Like not tightening drain plugs or oil filters or any of the other mess ups you can read about on here. There was a guy on here just last week that they didnt tighten the drain plug of his 2014 SRT and it fell out dumping all the oil on the road while his wife was driving it. Now what are the chances that motor doesnt have damage even if it does start when they fill it back up.
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  #28  
Old 10-02-2014, 07:49 PM
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Re: Synthetic oil?

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Originally Posted by Dawg View Post
I'm a huge believer in full synthetic oil. It can increase hp and torque by reducing friction and I don't have to worry about extreme cold in the winter or heat in the summer. I drive my v6 like I stole it (redline consistently) with no guilt whatsoever.

With full synthetic and quality oil filters I see no problem with 10-12k oil changes (or once a year). Time not spent changing the oil is time well saved.

Had ZERO engine issues over two decades doing this with 4 banger imports that I absolutely flogged every drive.

I have a family member who works for an oil company who swears by full synthetic as well based on lab testing. (Mobil 1)

On a related note, I was pissed at my dealer who offered a "free" first oil change that ended up being $50 with full synthetic. So disgustingly cheap that I don't use the dealer for any maintenance that is not free (warranty or recall).

Full synthetic isn't cheap, but damn---I just bought a 43k vehicle and you can't offer an oil discount on the first fscking oil change? Seriously?

Anyways, my 2 cents.
I agree.
I've had 3 brand new vehicles since late 2005 (drove used before that due to budget contraints). Each one I have run the factory oil for the recommended interval and then switched over to synthetic.

NONE of those vehicles has ever 'used' oil. I drain out the same amount I put in.
Ford, Subaru, and now Jeep.
I've been on forums for each vehicle and people bitch about their engines using/burning oil. I simply don't understand their problem...

My wife switched over to full synthetic at about 50k miles on her RAV4-V6 and her engine never uses oil either (now over 95k).

I can pick up a 5 quart jug of any name brand at Walmart for $24 plus another quart to fill the 6 quarts (funny same as my 3.6 liter Subaru) and buy the filter at the dealer.

Taking my time, oil changes maybe take me 30 minutes. Easy even in the dead of Minnesota winter (sub-zero temps).

Oh and speaking of Minnesota winters... (and summers).
That's the primary reason I switched. We see temps from +100 to -30 throughout the year. Synthetic makes startups so much easier (and better protection at startup).
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  #29  
Old 10-02-2014, 08:22 PM
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Re: Synthetic oil?

After reading all the posts it seems that the majority are using full synthetic. I'll probably also switch to synthetic and change the oil every 8000 miles instead of 4500. I usually rotate my tires every 8000 miles.
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  #30  
Old 10-03-2014, 08:01 AM
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Re: Synthetic oil?

Quote:
Originally Posted by Jayhawk47 View Post
O:K - I am going to show my naivety here.

For you guys that change your own oil - synthetic - or - otherwise. What do you do about your transfer cases ... differentials .... etc? And are there still "grease zerks" on these modern vehicles?

So yeah - it's easy to change your own oil. But what about all the other fluids and lubes that are more "out of sight - out of mind"?

Signed Naive.
No, those are good questions!
There are no zerk fittings on the GC so no worries there. As others have said, the diff and transfer case are not due until 64k for "severe" service. Also goes by time (5 years?) but I'd have to look at the service manual to be sure.
I only put about 10k miles a year on but nearly half are towing so I did a bunch of stuff early. The differentials are easy peasy:
DIY- 2011 Differential Service/ Fluid Change

The transfer case was too. I didn't do a How To, but some photos for the plugs are below. Same procedure as the diff service- top plug out first!





The difference between old and new transfer case fluid at 40,000 miles:

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  #31  
Old 10-03-2014, 08:29 AM
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Re: Synthetic oil?

Quote:
Originally Posted by The Evil Twin View Post
No, those are good questions!
There are no zerk fittings on the GC so no worries there. As others have said, the diff and transfer case are not due until 64k for "severe" service. Also goes by time (5 years?) but I'd have to look at the service manual to be sure.
I only put about 10k miles a year on but nearly half are towing so I did a bunch of stuff early. The differentials are easy peasy:
DIY- 2011 Differential Service/ Fluid Change

The transfer case was too. I didn't do a How To, but some photos for the plugs are below. Same procedure as the diff service- top plug out first!





The difference between old and new transfer case fluid at 40,000 miles:

Thanks Evil Twin - thats great info.
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  #32  
Old 10-03-2014, 08:11 PM
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Re: Synthetic oil?

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Originally Posted by Jayhawk47 View Post
I think an issue "for me" .. would be the tire rotation. I go 4,000 to 5,000 on a normal oil change and coincide the tire rotation. So - then if I go to synthetic - I'm not sure I would have the discipline to rotate my own tires. And then - I'm buying tires which is a lot more expensive than synthetic oil.
That is insanely often to rotate tires.

I rotate my tires when I switch to snows in fall and back in the spring.

Works out to about 10K miles on rotation. That's on the high side but I've never had uneven wear on any of my cars. Have not had an alignment in 20 years either.

And I would not let anyone rotate my tires either. They will over torque them EVERY TIME. Multiple dealers, multiple brands.

I brought my wifes car in for service and I had JUST put the summer tires on and told them NOT to rotate. I marked the tires before it went in. They rotated them. It literally took a 6ft bar to break the lug nuts free. I've split very good sockets when they did my Jeep once.

I always re-torque them if they do any service that might remove tires. I don't want to be stuck on the highway with lugs I can't get off. And don't usually keep a 6ft bar in the truck.
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  #33  
Old 10-06-2014, 11:48 AM
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Re: Synthetic oil?

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Originally Posted by mswlogo View Post
That is insanely often to rotate tires.

I rotate my tires when I switch to snows in fall and back in the spring.

Works out to about 10K miles on rotation. That's on the high side but I've never had uneven wear on any of my cars. Have not had an alignment in 20 years either.

And I would not let anyone rotate my tires either. They will over torque them EVERY TIME. Multiple dealers, multiple brands.

I brought my wifes car in for service and I had JUST put the summer tires on and told them NOT to rotate. I marked the tires before it went in. They rotated them. It literally took a 6ft bar to break the lug nuts free. I've split very good sockets when they did my Jeep once.

I always re-torque them if they do any service that might remove tires. I don't want to be stuck on the highway with lugs I can't get off. And don't usually keep a 6ft bar in the truck.
No alignment in 20 years? There must be a LOT of dust on your vehicles sitting in the garage on blocks for that long. But I live in "Pot Hole" heaven and my alignment is always getting out of whack.

On tire rotation - yeah that could be overkill. I think most people suggest "every other" oil change? Every situation is different - but I definitely notice more mileage out of my tires when I keep up a frequent rotation.
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  #34  
Old 10-06-2014, 11:16 PM
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Re: Synthetic oil?

Quote:
Originally Posted by lstowell View Post
... snipperooty ...


What!?!? I'd have asked for the used oil filter and stuck it... err somewhere highly personal on the service manager.

The full retail difference in cost even on the Hemi is less than $20 and I'd make an educated guess that there is good profit in that less than $20 difference.
For want of a Jackson, the dealer lost of a lifetime of business...
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  #35  
Old 10-07-2014, 01:25 AM
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Re: Synthetic oil?

Quote:
Originally Posted by Jayhawk47 View Post
No alignment in 20 years? There must be a LOT of dust on your vehicles sitting in the garage on blocks for that long. But I live in "Pot Hole" heaven and my alignment is always getting out of whack.

On tire rotation - yeah that could be overkill. I think most people suggest "every other" oil change? Every situation is different - but I definitely notice more mileage out of my tires when I keep up a frequent rotation.
I do 20K a year and live in MA and drive up to NH often. Plenty of potholes, that will knock your teeth out. Been lucky I guess. Maybe they cancel each other out statistically over time.

I got over 75K miles on my Goodyear Wranglers on my last GC. 3 sets. Never aligned it once. And they are rated lower tread life than the Latitudes.

My wife does 20K a year as well. She drives a VW. Last one was a Passat with 227K or so. Never aligned it once. She ran ONE set of hakkapeliitta snow tires for the whole time. She bent the steel rims a couple times on some pot holes. I just hammered it back. Didn't even rebalance

I never do preventative rebalance on my tires either.

We do plenty of driving with plenty of potholes.

And I overinflate my tires a few pounds.

If it tracks straight and tires are wearing good, I don't mess with it.
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  #36  
Old 10-07-2014, 05:06 AM
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Re: Synthetic oil?

Are all synthetics truly and fully synthetic. I read once that there is only 2 synthetics oil out there that is fully synth.
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