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Discussion Starter · #1 ·


Turns out all of the Mobil 1, 5w20, and 3,000 mile oil change haters can suck [it] this data.

Received my latest oil analysis results back from Blackstone Labs for my 2010 3.8 Coupe with about 170k total miles on the vehicle (as of tonight) and 11,076 miles on the oil. I ran this oil sample hard and long. Harder and longer than I ever have before and got some good results. I used off the shelf Mobil 1 Extended Performance 5w20 with a Purolator PureOne filter and added a magnetic drain plug for kicks and giggles. I Live in Texas so it sees plenty of 100+ degree temperatures. Every time my engine is warmed up it has a wide open throttle pull to the redline. A vast majority of my driving is on the interstate at ~80mph, and probably 2,000-2,500 of the 11,076 miles on the oil sample was from sustained 100+mph cruising on the toll roads with the A/C blasting on high. Aka I wasn't easy on the oil at all. After getting positive results back from the last 10,222 mile analysis the guys at the lab suggested I could take it longer to up to 12,000 miles. I changed it slightly early at 11,076 just because I had time off of work.

The universal averages on the right hand side of the report are set at an average of a 6,400 mile oil change interval. The aluminum particle count of 11ppm is only 3ppm higher than the 8ppm average from a 6,400 mile sample, or wearing about 1ppm/1,000 miles as opposed to 1ppm/800 miles from the average sample...meaning I'm still wearing less aluminum from the engine per mile than average even with the extended drain interval and loads the engine sees. The iron particle count of 26ppm, though it is 10ppm higher than the universal average is still wearing better than normal considering the interval given, wearing at 1ppm/426 miles vs the universal average of 1ppm/400 miles. All other wear metals seem quite stable regardless of the interval driven. Viscosity is still within grade for a 5w20 showing that it can handle the stress. Flashpoint is still good, fuel content was under 0.5%, water and antifreeze were not present and the insolubles (soot) count was steady at 0.3% again. TBN (total base number) aka the amount of active additive remaining was still above a 1.0 so it could safely go longer. It is worth noting that this sample (Mobil 1 Extended Performance 5w20) was run an almost identical mileage to the 11,037 mile sample (Pennzoil Ultra) from 9/5/15 and had better numbers in just about every category. This is enough for me to conclude that Pennzoil Ultra may not be the best oil for the 3.8 engines compared to the Mobil 1 E.P.

I am currently running the new Mobil 1 Annual Protection 5w20 oil that they claim is good for 1 year or 20,000 miles with the Purolator PureOne filter. I will probably take a sample around the 12,000 mile mark this time to see how it holds up compared to their Extended Performance line of oils, and pending results of the sample I will alter the next oil change interval appropriately. The engine runs extremely smooth and quiet without any start up noises or knocks as well. She's perfectly happy and healthy, and ready for the next 12,000 miles of criticism.

Flame on. :)
 

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Curious why you chose 5w20 and if your magnet picked anything up. I've been thinking about adding a magnet as well just for fun. Are you stock or modded?
 

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Discussion Starter · #3 · (Edited)
Curious why you chose 5w20 and if your magnet picked anything up. I've been thinking about adding a magnet as well just for fun. Are you stock or modded?
I chose 5w20 because it is the specified weight for the engine, on the oil cap, and in the manual. Also, I've used 5w20 since I have owned the vehicle and I wanted factual data, not random statement, to show that 5w20 is more than up to the task even when you put a good bit of stress on the engine. The engineers that chose the weight seem to know what they're doing thus far. The magnet had a very, very small amount of stuff on it as expected, especially after 11k+ miles. The analysis shows it isn't beyond normal as well. As long as I have owned the vehicle it has never burned any noticeable amount of oil, either. The dipstick is always showing full. Here is the link to the plug that I am using.

Amazon.com: Upstream M14x1.5mm Magnetic Oil Drain Plug for Most Honda, Acura, Mitsubishi, Ford(Blue): Automotive

Also, I am *slightly* modified. AEM cold air intake. Stage 1 SFR tune. Ark exhaust. Not much beyond that. These engines/cars are built well and are up to whatever you can throw at them (within reason) as long as you show them the proper maintenance.
 

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Really good info and interesting experiment, i use the same oil in my '10 3.8 and i change it every 3k-4k miles, good to know how much it can really take. Thanks for sharing!
 

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Thanks for taking the time, effort, and expence of performing the oil analysis and posting it up. It confirms what I have suspected, the automotive and oil manufacture enginers know what they are doing and wouldent recomend or produce product or service intervals they do randomly without research behind it. I'll be curious if the new Mobil 1 has somthing significant to offer over the old to justify the higher cost. Id be even more curious to know how off brand synthetic oil like Wal Mart supertech 5W20 or 5W30 compaires to the name brands.
 

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Discussion Starter · #6 ·
Really good info and interesting experiment, i use the same oil in my '10 3.8 and i change it every 3k-4k miles, good to know how much it can really take. Thanks for sharing!
My other favorite oil flavor is Castrol Edge Extended Performance as I've had good analysis results with it. Even with regular non-synthetic oil 3-4k oil changes is just a waste of time and effort. The non-synthetic oils are so good these days that I wouldn't hesitate to run them in my car with everything I do. The only reason I don't is they aren't quite up to extended oil change intervals and since I drive up to 1,000 miles a week I don't feel like changing the oil twice as often so I just use the synthetic stuff. Also, the Mobil 1 Annual Performance is on sale at Walmart right now. It's about $40/5qt jug and comes with a $10 rebate, dropping it to $30 which is about $3-4 more than their Extended Performance variety. So I figured why not?

Thanks for taking the time, effort, and expence of performing the oil analysis and posting it up. It confirms what I have suspected, the automotive and oil manufacture enginers know what they are doing and wouldent recomend or produce product or service intervals they do randomly without research behind it. I'll be curious if the new Mobil 1 has somthing significant to offer over the old to justify the higher cost. Id be even more curious to know how off brand synthetic oil like Wal Mart supertech 5W20 or 5W30 compaires to the name brands.
No problem! I wanted factual data to put out there for everyone to see, plus it satisfies my curiosity to do them! I believe the new Mobil 1 Annual Protection is different from the Extended Performance based on some research and virgin oil analysis results that make me suspect they are using formulations that don't quite show up as well using spectral analysis. Aka I believe they are using more ester bases in their oils, similar to Redline oils and a few other high end "boutique" motor oils. On paper their spectral analysis doesn't look like anything more spectacular than their extended performance variety but something has to be different and effective for them to put their name on it, and I believe that is it!

As far as the Walmart brand of SuperTech and their synthetic oils, they are actually really good oils, especially for the price. There are tons of excellent oil analysis results from people using the SuperTech oils and to be honest, a few of my past oil analyses have had 1/2 qt of the SuperTech Synthetic 5w20 since it is the cheapest 1qt bottle of synthetic to buy and the 3.8 takes about 5 1/2 qts (5.65 to be exact). One of these days I might even do an analysis with it.
 

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Thats great, if by chance you ever do a Super Tech analysis I would be very intrested in the results and how it compairs to the big brands. Might have to start running Super Tech sponser stickers. j/k.
 

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Good to see more oil analysis results being posted. Have you given the thought of testing Mobil 1's new Annual Protection Full Synthetic oil? I don't see a lot posted about it.
 

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Discussion Starter · #9 ·
Thats great, if by chance you ever do a Super Tech analysis I would be very intrested in the results and how it compairs to the big brands. Might have to start running Super Tech sponser stickers. j/k.
If you search online there are several of them! Or just do one yourself to know how your engine is doing.

Good to see more oil analysis results being posted. Have you given the thought of testing Mobil 1's new Annual Protection Full Synthetic oil? I don't see a lot posted about it.
Seems the more I post, the less I see people telling me that I'm destroying my engine and that oil should be changed every 3000 miles. Also, that Mobil 1 AP IS what I currently have in it now. I will be running a similar duration just to compare and see what it is capable of. It'll take me a few months to get 11k on it though. I'll post it as soon as I have it.
 
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