Oil Change Question

[Black02Silverado]

10 hours ago, Dr Awesome said:

I checked and that does not say that oil has the dexos1 Gen 2 certification on the site https://www.centerforqa.com/dexos-brand2015/, do you know why that is?  I can't imagine upholding the engine warranty if the cert isn't there, even if the oil is good.

AMSOIL doesn't pay GM to have them certify the oil.  It is an unnecessary cost. A very expensive one at that. It meets/exceeds the dexos 1 Gen 2 spec.  AMSOIL's own warranty will cover any repairs if the known cause is their oil.  If something should happen, first thing to do is take a sample of the oil and send it off to a lab of your choice to get analyzed.  If the oil shows that it was out of spec and cause the problem then AMSOIL will cover the cost of the repair.   Honestly, in all the years I have been with AMSOIL, I have yet to see where there was an oil related issue.  

[diyer2]

I only do cold oil checks after sitting over night.

The most accurate IMO.

 

K.I.S.S.

If you park in the same place all the time this is the way I see it.

You must be sure the right amount of oil was put in after an oil and filter change.

If you didn't do the oil change how do you know the right amount of oil was added?

 

When you do your first oil and filter change be sure the amount of oil is correct.

Park the vehicle in it's normal place.

Check it cold the next morning.

Remember where it reads on the dipstick.

You know it has the right amount of oil so this is your reverence mark as long as it's parked in the same spot.

Doesn't matter how level it is.

 

I parked on the street at our old house for 30 years.

My truck leaned to the passenger side due to the slope of the street.

I got my reference mark as I said after my first oil change and learned how much oil to add by checking it again after a cold check.

 

 

[Cowpie]

16 hours ago, Dr Awesome said:

I checked and that does not say that oil has the dexos1 Gen 2 certification on the site https://www.centerforqa.com/dexos-brand2015/, do you know why that is?  I can't imagine upholding the engine warranty if the cert isn't there, even if the oil is good.

Just because they did not dance around the fire and sing praises to the Gods of GM does not mean the oil does not meet the specs.   GM Dexos is just a spec that has certain additive requirements. It is a documented standard in the automotive oil community.  Amsoil, like all the other blenders, gets their add packs from the same suppliers like Infineum or Lubrizol.  And they supply anyone who requests it the very same add pack that makes up Dexos as they do any other blender.  The blender mixes it up with the proper base oil and, voila!,  it is a Dexos rated oil.    And even if it isn't on the "approved" list, the Federal Trade Commission regulations about accuracy in labeling would make any blender liable if the oil did not meet the spec.  No reputable blender needs to have the fines or the associate marketing hit by blending up sub par stuff.

 

Every oil you see on a shelf, every oil you can order, etc are all blended from various components that come from various suppliers.  No brand makes its own complete motor oil.  Shell, Mobil, Schaeffer, Amsoil, Castrol, Supertech, whatever.... it is mixed up and packaged by the blender from stuff they get from other sources.  The blender might make one or two of the ingredients that goes into a motor oil, but no company makes all the components that go into a motor oil.

[Old School Mechanic]

Your dipstick has 2 marks on it. The lower one is the "add" mark and the top one is the "full" mark, and the space in between is the operating range. If your oil level is in the operating range you are OK. I would think it would almost be impossible to get it exactly on the full mark, and keep it there for 5000 miles. If after checking it later on, say 1000 miles, the oil level is not in the operating range, either high or low, then you may have a problem.

IMO the brand of oil used is what ever brand makes you feel good. I think is like the gasoline we use...it's all made in the same place and just has different labels put on it.      

 

[Miallterain18]

On 6/1/2018 at 3:17 PM, jbman said:

Would rather use 10- 30 weight I feel the 0-20 is just to thin. What say you all?

I have the 6.2L and run 5w30 mobil 1 EP or pennzoil platinum with confidence, GM and all oem's play the CAFE game to get best mpg. Look up the camaro and corvette (6.2L naturally aspirated) they both have the 6.2L v8 and they spec the 5w30 oil. The only thing different between the two is the intake manifold and tuning along with exhaust components that are not affected by oil use. Between the two truck lines GMC and Chevy they  sold just over 900,000 trucks last year, the corvette and camaro sold less than 100,000 of both, the CAFE standards "fuel savings" (that you will never notice) that drives them to use these thin oils and is why the spec them for one and not the other.