Oil Change fixed the rough idle. DON'T USE MOBILE 1 !!!
History: Changed oil at 7,500 miles used Mobile 1 (the description on the back of the bottle says it is for gas and diesel engines) Result was rough idle, blue smoke, dead pedle till warm up.
2nd oil change at 14,500 with Rotella 15-40 (meets ford specs). result: Runs great, no more rough idle or other bad symptons.
A HUGE THANKS TO YOU ALL that mentioned not to use Mobile 1 in these engines.
Now I'm looking for a remote start and alarm system.
This site is the best!!!!
Thanks
I don't know anything about Mobil Delvac 1. I would have to read the label to see if it meets Ford specs. If you are plugged in most of the time I wonder if a person would need a lighter oil?
You are correct not to use Mobil 1 in your powerstroke...note the the spelling....
Mobil 1 exceeds all specs for diesel and gasoline passenger car engines and has passed all of the US and European tests to qualify it. ( mercedes too)
don't blame your problem on Mobil 1 ...since you picked the wrong application for the oil...your powerstroke.
You should have used Mobil Delvac 1 which is a specially formulated SAE 5W-40 Synthetic for light to heavy duty diesel engines...will work in gaasoline engines too It exceeds all specs and the 5W-40 formulation will provide quick cold weather lubrication for your engine...the pour point for this oil is -40C or below and since its pure synthetic will not wax up like conventional mineral based oils. It has a great robust additive package which I'll stack up against any pure mineral oil.
When I pick up my 04 250 Screw 4x4 6.0 PSD this Saturday the first thing I'm going to do is change to Delvac 1
It meets API specs....read the API approval donut on the bottle. Delvac 1 meets or exceeds all specs for diesel engines which all engine manufacturers acknowledge.
Quote:
Originally posted by jobguy I don't know anything about Mobil Delvac 1. I would have to read the label to see if it meets Ford specs. If you are plugged in most of the time I wonder if a person would need a lighter oil?
Your 6.0 PSD requires API CI-4 or CH-4 if CI-4 is not readily available. Go from there. I am in Texas and it is rarely below 20. I use the Delo 400 15-40 because I get a good price on it at Wally World or Sam's Club.
There are as many opinions on oil as there are on trucks. That is why there are Fords and (dare I say it? Chebbys.
Mobil One in a Powerstroke diesel? Check the label again. Last time I checked Mobil One is SL/CF rated which is fine for a diesel motor that is rated to use CF motor oil. But the Powerstroke diesel requires CI-4 rated oil with is not backward compatible to CF rated oil.
In short, you put the wrong oil in your Powerstroke, read your owner's manual.
Curious, that weight Mobil One did you use?
__________________
2003 F-350 Lariat CC/6.0L /TorqShift/FX4/SRW http://dan.prxy.org
Born on date: Jan 20, 2003
Number of reflashes done: 2 (05E15 Jan 8, 2007)
Number of C94 injectors replaced: 0
Number of times the EGR valve has been replaced/cleaned: 0
Delvac 1 5W-40 is CI-4 certified and exceeds all API and SAE specs which the OEMS recognize.
But just because an oil "meets" specs doesn't make it the best oil for your PSD. You want an oil that "exceeds" specs to give you a cushion of protection in extreme circumstances.
Getting cheap oil at "we dont hire illegal aliens" Walmart doesn't necessarily mean you are buying the best protection.
This is why my PSD will have Delvac 1 in it. If I'm spending 40K on a vehicle its going to get the best protection possible, not just heapest.
Bottom line is: You get what you pay for. We've all bought what we feel are the best trucks and powertrains bar none on the market...why would we treat them like they are not deserving of the best lubrication and fuel available.
Regarding Mobil 1....
Its true that Mobil 1 is not certified for diesels of the PSD level, however the entire Mobil 1 family has consistently earned the highest European ACEA rating for passenger car diesel engines, where more than 50% of the cars are diesel. So for the VW, Mercedes and all of the other vehicles made with diesel engines it is absolutely the best.
Sorry for being long winded...guess it's the extra strong coffee
Synthetic oil is the best invention since the light bulb. My wife blew a hose last year and unknowingly pumped all the water out of her Audi. When she called me on the cell phone she had oil temp at 315 and water temp at nothing. Long stosry short, I added more water and it ran fine for another 25k miles.
Now, with my new vehicles I always put 10k on them to break them in before I go to a synthetic oil. If you don't allow the rings to seat you will develope a blow by. There's plenty of C5 vette owners who have oil consumption issues b/c the Mobil 1 came in the car from the factory.
Sounds like you went to synthetic then back to natural oil. Isn't that bad?
you can break in an engine with Mobil 1 with no adverse side effects...there may be some disgruntled Crovette owners who will difffer but that is most lilely becauise GM's engine building quality control is all over the map.
Mercedes, Porsche, and a host of others come from the factory as does the Dodge Viper with Mobil 1 and they have no problems..
It simply gives you a nice smooth controlled breakin...
in fact there are NASCAR race teams who use synthetic oil to break their engines in...
no problem going back to straight mineral based oil or mixing...after all synthetic oil is from petroleum..its just a chemically engineered base stock to give is the best traits of an oil without that bad stuff like waxes etc....that along with a robust additive system and you have an oil that gives you great extreme condition protection...as you experienced with your wife's car.
Quote:
Originally posted by alfie623 Here's my $0.02:
Synthetic oil is the best invention since the light bulb. My wife blew a hose last year and unknowingly pumped all the water out of her Audi. When she called me on the cell phone she had oil temp at 315 and water temp at nothing. Long stosry short, I added more water and it ran fine for another 25k miles.
Now, with my new vehicles I always put 10k on them to break them in before I go to a synthetic oil. If you don't allow the rings to seat you will develope a blow by. There's plenty of C5 vette owners who have oil consumption issues b/c the Mobil 1 came in the car from the factory.
Sounds like you went to synthetic then back to natural oil. Isn't that bad?
I had a real long winded responce hear and I deleted it and I can sum it up with this:
You talking apples and oranges. Mercedes, Porshe the Dodge Viper and even Derick Cope's Freindly's NASCAR engine don't compare to any engine in this thread. Break in on these engines occurs when the machine shop builds the engine to the proper tolerances and not just using the next piston and conecting rod on the bench.....
you just reiterated my point.... the proper break in starts with a quality build...with any engine diesel or gasoline...hence no problems with synthetic oil breakin
I dont expect you to understand all of the history or technical aspects of engines and lubes, but trust me no matter whether its a 6.0 PSD or a 1.8L Honda...proper build is essential regardless of oil used.....synthetics, specifically Mobil 1, will make for a stonger break in long term. there are years of data to prove it...that's why the OEMS use it as factory fill
To sum up: when you're talking a quality build they're all apples...or oranges..or whatever you like.
by the way...I drive an 04 F-250 6.0 PSD Screw with Delvac 1 from day one
wouldn't have anything else.....its proven itself to me from over 22 years of doing field test work in both gasoline and diesel engines with a variety of engine oils
Quote:
Originally posted by alfie623 I had a real long winded responce hear and I deleted it and I can sum it up with this:
You talking apples and oranges. Mercedes, Porshe the Dodge Viper and even Derick Cope's Freindly's NASCAR engine don't compare to any engine in this thread. Break in on these engines occurs when the machine shop builds the engine to the proper tolerances and not just using the next piston and conecting rod on the bench.....
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