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Oil change intervals

fuse36

By fuse36
in Engines & Drivetrain

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Ventilator Senior Enthusiast

Ventilator

Posted
Posted

Engine bearings (Rods & Mains) are mostly lined with non metallic linings. Copper, aluminum, tin plated copper, nickle plated copper lead, teflon coatings. Made from sintered copper and aluminum on a steel substrate. Bushings and washers included. Then throw bronze, zink, lead, magnesium, and silicone into the mix.

 

Those will all be in any analysis, among several other things. Now, how many of those "pesky little shavings" are going to stick to a magnet?

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Chevor Senior Enthusiast

Chevor

Posted
Posted

First sample flagged for Silicon. 129 parts per million. Noted lube contaminants. I typically see silicon under 10 ppm on samples of the high mile truck.

 

It has since gone down since miles were put on.

HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted

M1 EP 0W-20 7,242 miles 2014 GMC Sierra 5.3 - Used Oil Analysis

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3777348/M1_EP_0W-20_7,242_miles_2014_G#Post3777348

 

Looks like 7500 miles on full syn is a good OCI. Note: unless you ask for full synthetic, the oil the dealer is using for your free oil changes is usually a conventional/syn blend and won't look as good as the Mobil 1 EP. The M1EP has a lot more additives to help extend the life of the oil. I've been noticing that GM seems to avoid the fuel dilution problem that some guys claim DI engines suffer from.

 

The reports look a lot better than the UOA's coming from the ecoboost guys. Lots of fuel dilution.

2014 F150 Ecoboost, 5W30 Pennzoil UP

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3719914/2014_F150_Ecoboost,_5W30_Pennz#Post3719914

 

Mobil 1 5W-30, 6,650 Miles, 2011 F-150 Ecoboost

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3047350/1

gone_fishing Enthusiast

gone_fishing

Posted
Posted

M1 EP 0W-20 7,242 miles 2014 GMC Sierra 5.3 - Used Oil Analysis

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3777348/M1_EP_0W-20_7,242_miles_2014_G#Post3777348

 

Looks like 7500 miles on full syn is a good OCI. Note: unless you ask for full synthetic, the oil the dealer is using for your free oil changes is usually a conventional/syn blend and won't look as good as the Mobil 1 EP. The M1EP has a lot more additives to help extend the life of the oil. I've been noticing that GM seems to avoid the fuel dilution problem that some guys claim DI engines suffer from.

 

Hey that's me! I plan on continuing to run by the OLM. Nothing in my UOA's seem to point to any issues.

FL335i Enthusiast

FL335i

Posted
Posted

BMW runs a 17,000 mi interval. I would do 8-10k on my twin turbo direct injection N54 335i. . Never had issues, always ran OEM MANN filters and a magnetic drain plug. I know hte 0-40 Euro M1 is supposed to be the real deal, full syn that M1 makes. Vs the 5-30 and 10-30 stuff. Which some say could be called blend depending on how you look at it. Again, IMO, I think GM's OLM on this truck for 7,500mi is a very good figure. 5 and 6k are low. 10k might be pushing it with 0-20 and syn blends most goons will use. I actually hit 0% today on the way home from work. Changing my oil tomorrow morning. PF63 and 8qts of 0-20 Full Syn Valvoline, dexos approved. I put a magnetic plug in my truck on the 3rd oil change. This oil change i've been running M1 0-20 EP and a P1 filter.

Spurshot Senior Enthusiast

Spurshot

Posted
Posted

... I've been noticing that GM seems to avoid the fuel dilution problem that some guys claim DI engines suffer from.

 

...

 

 

I would have guessed that a DI engine would have less fuel dilution than either port injection, TB injection or carbureted engines. A DI engine is touted as doing the same work with less fuel than a port injected engine. What is the source of the information that fuel dilution is back from the grave of the carburetor?

FL335i Enthusiast

FL335i

Posted
Posted

I researched DI as it was new to me 6yrs ago when I got my BMW. Lots of early Di's were worried about fuel dilution. I really doubt it also. It's a much higher presure system with more precision. Maybe early DI's had it. Who knows. Run what meets spec, per the OLM and move on in life.

REflectiveMAN New Member

REflectiveMAN

Posted
Posted

The general consensus in the blue oval camp is that fuel dilution issue on the ecoboost motors has more to do with the fact the FoMoCo factory tune runs the engine super rich in order to keep cylinder pressures down.

Back when I had my F150, My UOA's were coming back with 5-6% fuel at 5000 miles (mostly highway). The dealer insisted the was nothing wrong with the truck and it was "normal". The service writer even tried to get me to stop doing UOA's "Those are for commercial vehicles and not personal vehicles." I really think that fuel dilution was at least part cause of my timing chain failure at 54000 miles on that truck.

On the Silverado I'm at 24000 miles and 5 oil changes on the 5.3L now, and I've never had over .5% fuel. In fact the UOAs have been very very clean, so I'm going to start doing 7500 miles like the manual recommends.


Jon A Senior Enthusiast

Jon A

Posted
Posted

Yes, most of the fuel dilution issues I've seen complained about have been on Turbos--TDI's. I don't think we have anything to worry about unless something actually goes wrong with your engine (stuck injector, etc).

gone_fishing Enthusiast

gone_fishing

Posted
Posted

The general consensus in the blue oval camp is that fuel dilution issue on the ecoboost motors has more to do with the fact the FoMoCo factory tune runs the engine super rich in order to keep cylinder pressures down.

 

Back when I had my F150, My UOA's were coming back with 5-6% fuel at 5000 miles (mostly highway). The dealer insisted the was nothing wrong with the truck and it was "normal". The service writer even tried to get me to stop doing UOA's "Those are for commercial vehicles and not personal vehicles." I really think that fuel dilution was at least part cause of my timing chain failure at 54000 miles on that truck.

On the Silverado I'm at 24000 miles and 5 oil changes on the 5.3L now, and I've never had over .5% fuel. In fact the UOAs have been very very clean, so I'm going to start doing 7500 miles like the manual recommends.

 

Do you have your UOA from your Silverado posted online? I would like to take a look at them to compare them to mine.

 

Thanks!

fuse36 Enthusiast

fuse36

Posted
  • Author
Posted

Dealer sent me a reminder first service at 4000 mi. I usually have service and tire rotation at 6000 mi intervals.

my Chevy dealer recommends every 5,000 miles. That's what they put on the new oil change sticker. I go every 6-7,000 miles

 

 

Sent from my iPhone

using Tapatalk

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

Be careful letting the dealership rotate your tires when you go in for an oil change. My local dealership has messed up all of my lug nuts by using an air gun. The end are wore down and starting to rust and they all have various scratches and dings. I always do my own work on my trucks, motorcycles, tractors, etc but being the tight**s I am I figured I would take advantage of the 4 "free" oil changes. It is safe to say after I get them to get me a new set of lug nuts I will be doing all future oil changes myself.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

With the warranties these days on the rides I buy every thing gets done at the dealers. Anything goes wrong it's on them. I buy Hyundais the most 10 years, 100K miles warranty. Same with gas I save my receipts. Car washes at the dealer for free, scratches they buff out. I play with my old stuff, the new stuff is on them, I just don't stress over it.

 

 

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