Someone jealous they can't afford a new $140k "**** sled" ? Its ok bud, maybe some day !

Toyota = coking problem

Mercedes = Sludging problem

Coking caused by design flaw. Sludging caused by oil issues. Its not the oil itself, its the interval length (for the frickin 100th time ).

You do NOT know what you are talking about, simply put. You prove only ignorance and lack of knowledge and understanding with your posts. No offense meant, and sorry to be so blunt, but I would stick with bustin kids for lightin up a small doob and leave auto's to people who work on em.

BTW, Nascar engines can't be compared. apple to oranges my friend.

All other cars listed, most of them I have seen people complain of sludge problems. Again, oil interval.

 

haha, sorry.. truck is new to Me... dealership changed it when i first bought it.. and now its my turn... -- Funny thing about that.. it was at a Chevrolet dealership, and I bought this truck before they even had time to wash it or service it.

 

Used to run a Mobil station & do mechanic work in the 80's so I do know a thing or two about workin on cars.....I am also responsible for the maitenance on a fleet of 20- 2007-2008 FORD CVPI's. So I do know a bit about vehicles................I would NEVER spend $140,000 on a MB **** SLED.....they are the most overated cars on the road...No Offense meant!........

 

That explains a lot right there.


Overrated ?? I don't think so, but thats just me. They are one of the safest cars on the road. Worth $140k ? I guess to someone, not me. I buy em used, broken, or I buy Ford.

Although, if you have been behind the wheel of the CL600 (v12 twin turbo) you'd be impressed. Was driving one of those the other day, and wow, just WOW ! Thing has acceleration like a bike ! Its crazy. Honestly the one of the fastest cars out there, not to mention the luxury that comes with it.

The Bluetec diesel is just a work of art. Go test drive one to see what I mean. It has acceleration like a gasser sports car, runs as smooth as a gasser, doesn't smell, burns cleaner then the average gas motor being used today, and gets about 42 MPG on the highway. We had our first 08 come through the other day, all i could do was Very impressive, from the frame, to control arms and sway bars, everything looks space age, or looks like something taken straight from Indy cars. Plus, a lot of their new cars just look really, really nice to be honest (first time I have liked the body styling since the early 90's SL's), but thats simply opinion.

 

Googled Mobil 1 causing sludge problems

found this site, read through it and just couldn't help but laugh. I bet some of yall can get a kick out of it as well:

http://www.dodgedakotas.com/boards/gen/8576-4.html

My favorite part:

Talking about all the added HP from Amsoil. I gotta make the switch !

(sorry.... I'm bored)

 

My father and I both have used Castrol Syntec plus a quart of Slick 50 oil additive in all the vehicles we've owned for several years now, with at least three of them hitting 200,000+ miles before trading in. We usually run about 20,000-25,000 miles (yes, that's right) between oil changes and have only had the best results with it. We both put about 50,000-60,000 miles per year on our vehicles, so they are getting run constantly, with about 70% highway miles, but my trucks are always hauling or towing something every other weekend too.

One thing that I have noticed on my SCrew is that it seems to be declining recently on gas mileage and overall performance. I, like Shanks, bought my '05 used and am on my first change since the dealer. With my previous trucks (Dodge and Chevy) performance wise they held very well up into the 20,000 mile range before losing any performance. The SCrew is right at 19,000 since I first changed it and I've been noticing over the past month or two (anywhere from 4000-6000 miles) that the MPG's have been declining from their normal 18-22 to about 16-19mpg.

At first I was attesting this to summer heat, then the gas quality declining and/or the blend change going into effect (they do it at every season change). But I'm now thinking that the Ford might only be truly effective up to 15,000 miles per change...reasons for this is engine design, design tolerances (like the tranny issues), etc. So from now on I think with this vehicle I'll try it with 15,000 mile changes and see how my performance goes from there.

In my opinion high-utilization is a key factor to not just oil life but overall engine life and performance, and by driving for longer periods of time and not quick turns here and there, I believe that the oil doesn't burn up and sludge as quickly. The numbers even speak for themselves...I bought it with 53,000 back in October 2007 (the Cadillac/Infiniti dealer used Mobil 1), changed the oil with Castrol Syntec and Slick 50 at 73,000 (about 2000 miles after a noticeable change in performance), and now I'm sitting at 92,000 and ready to change it again. So far it's been a light year, only 40,000 in 11 months with one more to go, LOL...

 

^^ you have some valid points. especially about driving distance.

I still think your crazy going 20-25k miles between changes !!! but if it works, it works I guess.

 

Yeah well like I said, it's worked on previous vehicles with a preformance loss a couple thousand miles before, but so far the F150 hasn't liked it too much. So I'll knock it down to 15,000 miles and go from there. But overall the 3000 mile oil change is ancient history, as technology has made even conventional oils adapt to longer and harder mileage.

BTW, besides gaining a smoother running engine, quicker revving, more efficient engine when using the Castrol Syntec, we found that the quart of Slick 50 does more than wonders for adding the same benefits to the lubricating and cooling properties of the engine - if not more - than just synthetic oil alone. It's a fairly cheap addition to gain better running characteristics overall.

 

BTW, don't you think that a name brand of oil called "Quaker State" would be pulled from a state with quakers - Pennsylvania maybe?...LOL, I don't know many quakers down here in Tejas (but I do know one though).

Kidding aside, I have heard of what you're talking about with the waxy properties of certain oils, but I haven't heard or seen any factual data on where certain brands get their oils from and which oil fields have the wax or not. Could be interesting if someone Googled it and posted some info...?

 

Pennsylvania crude was called "sweet crude" because it was low in sulfur content- less than 1%. It was, at the time, considered the best crude because all the refineries were using solvent refining. They got a more pure oil from it. As far as it being better, it was only to the stand point that it had less sulfur in it. It generally refined at a high Viscosity Index but at the time, that was not a huge factor as it is today.

I think the bad rap Mercedes is receiving is not exactly fair. Here's the issue as I see it and I may be way off but here it is anyway. Sludging is a design issue. The Mercedes engines are designed outside of the USA and are subject to more ACEA standards than our API standards. In the rest of the world, there is more ZDDP in a formulation as the rest of the world doesn't have the emissions controls we have. Most of Europe uses a PAO basestocked oil. M1 is a dino based oil and is very limited on the amount of ZDDP it can have and still maintain API Certification. The European engines don't have to meet API but ACEA which allows far more ZDDP. ZDDP, while used a friction modifier, is also a great detergent. ACEA oils have more of it and Mercedes is engineering their engines to it, not API. Frankly, if I were in control of my customer cars and money wasn't an issue, I'd be using Amsoil in all of them. Amsoil is a PAO and also has about three times the max limits set by API for ZDDP. It's the lack of ZDDP that has created the problem and Mercedes not engineering to our API standards but selling their products here. There will not be any other choices as I see it unless Mercedes gets a blender to make specially bottled oil that has more ZDDP in it and spec it for their cars. MT, I think you really care about your customers and I would suggest asking at the shop about using Amsoil. It should solve the issue.

In regards to what cars come factory filled with Mobil One. Do you have any idea how much money M/E spent having GM recommend the Mobil One oil? GM didn't just pull M1 out of the air and they certainly didn't recommend it because they think it's better. M/E paid millions to GM for the labeling of the oil fill caps and are selling M1 to GM at discount prices. It's a business deal, not because it has superior lubricating properties. And NASCAR teams do not use Mobil One. No NASCAR team uses any bottled oils that are available to you. All of the teams have their own on staff blender that engineers each engine to each race. The oil isn't the same from one race track to the next. The goal is to make the engine run as fast as possible and last just long enough to make it to the end. After that, they don't care.

 

labnerd is right about nascar they do have there own oils. roush racing uses jack roush's oil which is some kind of better valvoline designed by jack roush.
quick question, is valvoline synthetic oil good to use? i just use napa oil which is made by valvoline and just want to make sure its not sludging inside the engine.

 

That thread was hilarious!.............

 

I have been using mobil 1 5w30 since 70K miles and now have 141K and have not had any problems. 1997 f150 4.6 windsor. I I am thinking of switching to MC 5w30 synthetic blend. I used to put around 7k miles a year on my truck and changed oil 2 times a year weather it needed it or not. Now, I am putting around 18K per year. The price of M1 is getting to me. I already use mc 5w20 in my wives 02 mountaineer 4.6L romeo. I live in Steamboat Springs, Colorado and am wondering if I switch oils, should I go with 5w30 or 20. By the way, truck runs better than it did when I bought it with 68K miles six years ago. Thanks for any input.

 

haha yea damn scott

 

NTX, your 05 may be suffering from the documented fuel injector issues. There is a warranty extension involved, you may want to discuss this possibility with a Ford dealer. They had a bad batch of injectors.