After reading the dexos1 specs on JobbersWorld compared to GF-5, dexos1 is a step backwards in quality compared to the GM4718 spec. 4718 required a 5.5 merit spec for weighted piston deposits (wpd) and a maximum viscosity increase of 90% in the Sequence IIIG Test. dexos1 only requires 4.5 merits in wpd and a 150% viscosity increase in the same IIIG sequence. dexos1 is a weak spec that could be met by regular conventional. dexos1 is is not much better than GF-5 (which can be met by a high quality conventional or synthetic blend) and will leave the door open for formulators to offer up weaker synthetic motor oils meeting dexos1 while charging more for the GM spec. Now I see why people on BITOG are p-o'd. If you believe dexos1 was cool because it meant quality, the table on JobbersWorld will show dexos1 spec'd oil is of much lower quality than the abandoned GM4718M spec. while at the same time being hit by the GM fee.
GM4718M Spec replaced by weaker GM spec
- Thread starter modularv8
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Originally Posted By: modularv8
After reading the dexos1 specs on JobbersWorld compared to GF-5, dexos1 is a step backwards in quality compared to the GM4718 spec. 4718 required a 5.5 merit spec for weighted piston deposits (wpd) and a maximum viscosity increase of 90% in the Sequence IIIG Test. dexos1 only requires 4.5 merits in wpd and a 150% viscosity increase in the same IIIG sequence. dexos1 is a weak spec that could be met by regular conventional. dexos1 is is not much better than GF-5 and will leave the door open for formulators to offer up weaker synthetic motor oils meeting dexos1 while charging more for the GM spec. Now I see why people on BITOG are p-o'd. If you believe dexos1 was cool because it meant quality, the table on JobbersWorld will show dexos1 spec'd oil is of much lower quality than the abandoned GM4718M spec. while at the same time being hit by the GM fee.
Yeah, GM is Great..
Maybe they just want it to be easier to certify, so they can sell more. And really, is conventional Oil BAD now?
Surely, oils that meet 4718-M (like MaxLife, all of them) will still be used by those that dont think their car is disposable, like an Eco bottle.
After reading the dexos1 specs on JobbersWorld compared to GF-5, dexos1 is a step backwards in quality compared to the GM4718 spec. 4718 required a 5.5 merit spec for weighted piston deposits (wpd) and a maximum viscosity increase of 90% in the Sequence IIIG Test. dexos1 only requires 4.5 merits in wpd and a 150% viscosity increase in the same IIIG sequence. dexos1 is a weak spec that could be met by regular conventional. dexos1 is is not much better than GF-5 and will leave the door open for formulators to offer up weaker synthetic motor oils meeting dexos1 while charging more for the GM spec. Now I see why people on BITOG are p-o'd. If you believe dexos1 was cool because it meant quality, the table on JobbersWorld will show dexos1 spec'd oil is of much lower quality than the abandoned GM4718M spec. while at the same time being hit by the GM fee.
Yeah, GM is Great..
Maybe they just want it to be easier to certify, so they can sell more. And really, is conventional Oil BAD now?
Surely, oils that meet 4718-M (like MaxLife, all of them) will still be used by those that dont think their car is disposable, like an Eco bottle.
Just buy the oil that met GM 4718M before DEXOS-1 came out, like MaxLife, and you wont have an issue. unless a known, conformed reformulaion, to meet a lower spec, is announced.
Or any presently meeting GM4718M oil.
Or, buy oils that meet VW 502.00 or your favorite spec like BMW LL-01........
Or any presently meeting GM4718M oil.
Or, buy oils that meet VW 502.00 or your favorite spec like BMW LL-01........
Isn't Honda's HTO-06 spec more stringent than the GM4718M spec? If so, just purchase a product that is Honda HTO-06 approved.
Are there regular "conventional oils" that have a NOACK spec of 13% or less?
Originally Posted By: LS2JSTS
Are there regular "conventional oils" that have a NOACK spec of 13% or less?
Yes, there are many. API SL and SM spec has a max NOACK of 15% with most falling between 11 and 13.
Are there regular "conventional oils" that have a NOACK spec of 13% or less?
Yes, there are many. API SL and SM spec has a max NOACK of 15% with most falling between 11 and 13.
Aren't those oils at 11-13% synthetic or syn blends?
Originally Posted By: modularv8
..... dexos1 is a weak spec that could be met by regular conventional....
This is the statement I was referring to by asking my question.
Valvoline as one example, because they actually list NOACK volatility in their spec sheets. Well for Valvoline, their conventional oil is listed as
Can you provide a list of these conventional, non syn oils that have NOACK volatility ratings of 11-13%? TIA.
..... dexos1 is a weak spec that could be met by regular conventional....
This is the statement I was referring to by asking my question.
Valvoline as one example, because they actually list NOACK volatility in their spec sheets. Well for Valvoline, their conventional oil is listed as
Can you provide a list of these conventional, non syn oils that have NOACK volatility ratings of 11-13%? TIA.
So only two of them meet the Dexos1 spec? And none of them are anywhere near 11%
Are there any Group II based oils that have a NOACK that is as low as 11%
And the bigger more important question is what do you think the NOACK rating is on the bulk 5w30 down at the corner oil change place?. The oil that 70% of GM buyers actually use....
From that chart and the GM spec of <13%, it's clear that the majority of current Group II oils wont meet the Dexos1 spec...and only two of them barely meet it.
Are there any Group II based oils that have a NOACK that is as low as 11%
And the bigger more important question is what do you think the NOACK rating is on the bulk 5w30 down at the corner oil change place?. The oil that 70% of GM buyers actually use....
From that chart and the GM spec of <13%, it's clear that the majority of current Group II oils wont meet the Dexos1 spec...and only two of them barely meet it.
I would have assumed that the Dexos 1 would supercede the GM 6094 and that the Corvette spec would remain as a higher spec that only synthetics meet.
Keep in mind that the majority of the GM rolling fleet requires spec 6094M, not 4718M.
dexos1 is superior than the current standard (6094M) for the majority of vehicles. And for those that require 4718M, they can keep using there PP or M1 that meet dexos1 and be just fine.
dexos1 is superior than the current standard (6094M) for the majority of vehicles. And for those that require 4718M, they can keep using there PP or M1 that meet dexos1 and be just fine.
Originally Posted By: HangerHarley
Surely, oils that meet 4718-M (like MaxLife, all of them)
What? This is the first that I have heard that Maxlife is GM4718M approved.
Surely, oils that meet 4718-M (like MaxLife, all of them)
What? This is the first that I have heard that Maxlife is GM4718M approved.
Better start a stash.
GM4718M is a very stong Spec to meet. if you own and love your GM car use oils meeting that spec
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