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Maintenance & Fluids Discuss products, techniques, intervals, and fluids for maintaining your GM truck including oil and oil additives, fuel and fuel additives, alternative fuels (Bio-D, SVO, WVO), filters, grease, and maintenance specific tools.

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Old 07-28-2019, 04:27 PM   #11 (permalink)
Ted White
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The Oil Monitoring System takes ALL OF THOSE FACTORS in to account and a whole lot more - such as how long the engine runs, the temperature of the coolant, the amount of fuel being used, the torque and horsepower being produced, the gear ratios, exhaust gas temperature, the age of the oil based on when the oil life monitor was last reset. If it has anything at all to do with engine operation, it is being factored in.

As stated before, everyone is free to spend their money on as many oil changes as they want to, but the scientific fact is, it just isn't necessary to change the oil before the Oil Life Monitor indicates to do so. It is a waste of money to do more frequent oil changes, even if it makes an owner feel good.

Send an oil sample to Blackstone and you will see the proof.

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Old 07-28-2019, 07:11 PM   #12 (permalink)
D.Camilleri
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I t oo got burned by Amsoil many years ago, around 1980 to be more specific. I had a brand new crate 350 in a 1970 chevy blazer, after the first oil change I fill up with Amsoil 10W40 with a claim that the oil would last for 25000 miles. At 10,000 miles, my engine started overheating when pushed hard. I changed my oil back to the old stand by Valvoline and the overheating stopped. I seem to have a loooooong memory.

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Old 07-28-2019, 07:16 PM   #13 (permalink)
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Quote:
Originally Posted by Ted White View Post
Oil changes are INCLUDED for the first two years so you don't need to worry about oil yet.
First two oil changes.
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Old 07-28-2019, 07:21 PM   #14 (permalink)
Ted White
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It's a shame they cut back on the number of included oil changes. The allowance was more generous on earlier models.
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Old 08-05-2019, 03:42 PM   #15 (permalink)
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Quote:
Originally Posted by diesail View Post
I toyed with Amsoil long ago and it IMO it is snake oil. The made a lot of claims including being better than this rating or that but did have the certifications to back up the claims with excuses of it being a long expensive process bla bla bla. Maybe things a different now, but bottom line for me is if it doesn't have this with all the right alphabet soup on the label



I say no thanks.

Definitely


According to dnewtn3 a member here.....he's moto is....Oil is Oil Association
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Old 08-07-2019, 09:12 PM   #16 (permalink)
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Oil is cheap engines are expensive. I buy a case of delo from Costco for $30 and add a quart of Lucas oil and change it at 3k miles
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Old 08-08-2019, 10:58 PM   #17 (permalink)
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on both my duramax's along with other vehicles I've sent samples to Blackstone multiple times. in ALL cases changing when the oil life monitor say 10% or less or when the mfg recomended results from Blackstone indicated I could easily go another 5K miles or more. And on the trucks that was after some serious towing mileage.

IMHO the best thing to do is to change when the oil life says to and send a sample to blackstone once or twice and look at the results and adjust if needed based on the blackstone results. While blackstone indicates I could easily go longer, if I'm still under warranty I just go by the oil life indicator. afterwards take the oil life indicator and blackstone results into account to set the change interval.
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Old 08-08-2019, 11:26 PM   #18 (permalink)
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Thanks ktmrfs for confirming what I have been promoting for at least a decade on this forum. It is a waste of money to change the oil earlier than the oil life monitor indicates.

And to duramaxforlife, many people put up the same argument that you have, that oil is cheaper than engines, but there is NO evidence that more frequent oil changes saves your engine. And how long do you plan to have that engine in your possession anyway?? No dealer, at the time of trade in, ever asks how often you changed the oil? It's hard to break the habit, I know, because I've been there, but it's a habit, and not a scientifically supportable position.
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Old 08-11-2019, 05:59 PM   #19 (permalink)
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Ted White I have an LBZ Duraburb so I wouldn't trade it in to a dealer lol but I plan on keeping it a while so I'd rather air on the side of caution.
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