Mobile 1

[Stepside Z]

I took my truck in for an old change today and decided switch to Mobile 1 now that I have 10K miles on it. Just wondering what oil change intervals you use and if you noticed any milage increase? Thanks for the help.

[RyanbabZ71]

every 3 month/3K miles

 

whichever comes first

 

its mostly city so its severe duty

 

Id rather pay a little more now and have it last you know

 

Milage increase?  12mpg avg hasnt changed since new

[firecadet613]

I just switched over to Mobil 1 500 miles ago.  Haven't had it long enough to notice a ton of benifits but I noticed my engine starts easier and idles smoother.

 

Joe

[sincityZ71]

I have it sitting in the garage, I am going to change my oil this weekend, so this will be its first oil change with Mobil 1.  I change usually at 3000 - 4000 miles, just depends on when I have time during that mileage.

[gmcjoe]

I've been using it for about 15k now.  No performance benefits that I can see yet.

 

What turned me on to it was an ex had a '90 Rustang GT she bought new. After 130K I pulled the heads to replace the gaskets and that engine was CLEAN!

[CityTruck]

I've used it (synthetic and filter) for several years in several vehicles.  Never took the engines apart to see how "clean" they were, but the fact that I never had to kind of speaks for itself.  I also try to stick to the 3K mile rule.  I know that's excessive for today's engines, but it's better to change it too often than too little IMO.  The only complaint I could come up with for Mobil 1 synthetic (and I'm reaching) is that they had a bad batch a year or two ago and had to recall some.  Even then, they promptly released the serial numbers and got the word out pretty quick.  I don't remember hearing about anybody actually suffering any engine damage.

[woyster_00z71]

I just switched to Mobil 1 last weekend in my '00 Silverado.  So far I have noticed easier startup and smoother idling as well...but maybe it is just my imagination (trying to justify the extra money).  But anyway, I have heard only good things about it and decided that it was time to switch.  I bought the truck used with about 50,000 miles on it.  The first oil change was 3,000 miles later with Pennzoil and a Fram filter.  Then after reading several posts I found out about the Fram filters being crap and how good Mobil 1 is.  I want this truck to last forever so I decided to switch to Mobil 1 oil and filter.  I plan on changing it as close to every 3,000 miles as possible even though it is synthetic.  I too believe in too much is better than not enough.  So far so good.

 

My couple pennys worth!

[GreenRado]

I've used Mobil 1 since 1988 on all my vehicles since then (except the poor Lumina work car), and have never had any engine issues.  Like most members here who use synthetic, I also think it's just plain cheap insurance (cheap??).

 

IMO synthetic's primary advantage, unless you race BAJA, is cold-weather starts.  I like seeing that oil pressure needle jump right up, even when it's near or below Zero, and I don't have to hear all kinda sounds coming from the engine that makes my teeth grate!!  

[CMNTMXR81]

I use Mobil 1 in the other vehicle.  

 

I will probably switch to Mobil1 in the truck after the 6,000 mile mark.  These LS1 derived engines don't fully break in until they get to the 6k-10k mileage mark so running it with "dino" is actually better up to this point.

 

I do mine every 2,000 miles and send it out for analysis each time too.

[WEFs99]

Changed a Dodge Caravan over to Mobil 1 at 60k. No leaks, definite fuel mileage improvement and it stopped a cold start lifter noise.  Changed the '99 Sierra at 5k and it started a cold start lifter noise.

[TheScaryGuy]

Actually its better to leave oil in too long than to short.  Oil manufacturers have all kinds of additives and stuff that if you change your oil to often will break down engines quicker than save them.  Then again, this is just what a buddy said about his chevy fleet trucks.  I just figure hehas a valid opinion since he does all the work on his own trucks.  About 10 I believe for his construction company.  

 

I was also talking to my dad's buddy who works at Delphi, hes some type of engineer, anyways he says that AC delco filters only need to be changed every other oil change....I was kinda shocked at his remark.  I still change them with every oil change since I'm paranoid.

[RyanbabZ71]

i may be wrong here but isnt "delphi" electronics?  I have a friend who has an uncle who works there in indiana.  Only thing they do is electronics and only engineers working there are EE's.

[jmhornz71]

I put Mobil1 in my truck at the first oil change. It now has 25k on it. The engine is quiet no knock and it doesnt burn any oil between changes. It gets changed every 3k miles. Its more expensive but I think its worth it.

 

00 Z71 ext cab 5.3l 3.73 Charcoal grey

[jwhitjr]

I just changed for the first time at 1700 miles in my Silverado. Went with Mobile1 and a Bosch filter. But I see that Exxon is making a new all synthetic a about a buck cheaper per quart than the mobile1. Both are owned by Exxon-Mobile.

 

I wonder if it is as good. Same ratings.

[TxDoc]

Just to throw out some info from the www.mobil1 site:

(not to contradict or dispute anyone's personal experience, just some info from the site)

 

myth-You should break in your engine with conventional oil, then switch to Mobil 1.

reality-The tighter tolerances and improved machining of today's engines have reduced the significance of the traditional engine break-in. Few manufacturers call for any special consideration. Since Mobil 1 is factory fill in Corvette, Viper, Porsche and other high-performance vehicles, engine break-in is obviously not an issue with current-generation vehicles.

 

 

myth- Mobil 1 requires a special oil filter.

reality-Mobil 1 does not require a special filter. The same type of oil filter used with a conventional oil will give acceptable results. Mobil does offer a special Mobil 1 High Efficiency Oil Filter that contains synthetic fibers instead of the typical cellulose and polyester fibers found in most filters. The synthetic fibers in the Mobil 1 filter have less resistance to oil flow and are much more efficient at removing particles from the oil than conventional filters.

 

Q- Why do fully synthetic oils still contain small amounts of mineral oil?  

A-All motor oils contain additives that provide extra protection against wear, corrosion and engine deposits. These additives are dispersed in mineral oil carriers that are mixed in small amounts into the synthetic oil. The carrier oils amount to a very small percentage of the finished motor oil.

 

Q- What makes synthetic oil superior to conventional oil?  

A- Conventional motor oil is made up of an inconsistent mixture of long and short chains of carbon and hydrogen atoms. In the extreme heat of an engine, short-chain molecules can evaporate, and unstable molecules can oxidize and break down. Because synthetic oil is made of optimized chain molecules of uniform length and shape, it remains more stable and resists oxidation and breakdown at high temperatures. In addition, because synthetic oils are made from pure engineered base stocks, they are free from the wax and asphaltic contaminants found in conventional oils. These contaminants can solidify and resist flow at low temperatures

 

 

 

 

myth -I need to flush my engine before switching to Mobil 1.

reality-No special preparation is necessary when switching from conventional oil to Mobil 1. We do not recommend mixing different types of synthetic oil, as they may be composed of different types of synthetic base stocks. Change the oil and filter when changing from another synthetic oil to Mobil 1.

 

 

 

myth-I don't have to change my oil as often when I am using Mobil1.

reality-Driving habits, driving conditions and driving environments all influence oil-change frequencies. We recommend that you follow the oil and filter change frequencies shown in your vehicle's owner's manual, especially during the warranty period. The excellent protection you get from Mobil 1 gives you the confidence to go the full length of the mileage or timeframe recommended by the manufacturer, including those who are now beginning to recommend extended drain intervals. It also allows the reserve protection capabilities of Mobil 1 to cover unusual or unexpected driving conditions.

 

 

 

If your engine is an older model that has been rebuilt, you may wish to follow the original engine break-in schedule. In this case, where you may be changing the oil after just a few hundred miles, you might want to use a conventional oil initially and switch to Mobil 1 once you have reached a mileage that permits longer oil drain intervals.

 

myth- Oil doesn't really need to be changed regularly in modern engines.

reality-This is truly a myth! In addition to lubricating moving parts, oil is designed to carry combustion by-products away from the pistons and cylinders. Oil must deal with small amounts of water formed as the engine heats and cools and with dirt and dust that enter the engine through the air-intake system. It may also have to deal with fuel leaks (fuel dilution) or coolant leaks into the oil system. The oil filter helps by removing any particles and abrasives, but even a high-quality filter can't remove fuel and other liquid contamination from the oil. Eventually, the oil additives that disperse sludge-forming materials and prevent rust and corrosion are used up. When the additive depletion reaches a certain point, the oil can no longer do its job and must be changed.

 

The rates at which contamination and additive depletion occur depend on many variables. High underhood temperatures brought about by stop-and-go driving, the use of power accessories, exhaust emission equipment, turbocharging and basic engine misadjustments all contribute to oil deterioration. It is difficult, if not impossible, for the individual motorist to determine when the contamination level is too high.

 

With all of these factors in mind, automobile manufacturers recommend oil changes at certain time or mileage intervals. These oil change recommendations vary depending upon model and manufacturer, and with the type of service under which the vehicle customarily operates. More frequent oil changes are always recommended for severe service.

 

 

myth-Mobil 1 will leak out of the seals of older cars.

reality-Mobil 1 is fully compatible with the elastomeric seals and gasket materials used in most modern engines. In engines that are in good condition, seal compatibility will not be a problem. Some older engines produced before the mid-1970s were manufactured with looser tolerances than today's engines. Low-viscosity grades of oil can leak from these engines. The solution is to use a higher-viscosity grade like Mobil 1 15W-50 to reduce this leakage.

 

 

myth-You can't mix Mobil 1 with conventional oil.

reality-Mobil 1 is compatible with conventional motor oil, should it be necessary to mix the two. The additive package in Mobil 1 has been specifically developed to work with its synthetic base fluids, so diluting Mobil 1 with conventional oil will reduce the superior performance characteristics of Mobil 1. While mixing conventional oil and Mobil 1 is acceptable, we do not recommend mixing different types of synthetic oils, since they may be composed of different synthetic base fluids. Change the oil and filter before changing from another synthetic oil to Mobil 1.