Volkswagen Dealer arguing with me over the color of 508 oil.........

siriusc1024 said:
Yes, it's dyed so that someone doesn't accidentally put it into something that calls for something like 504.

It's also dyed to that someone doesn't put non-508 where called 508 is called for.

Further, the dye distinguishes it from other 0w-20's because 508 is very specific 0w-20.

It's dyed so that people who are spec'd 508 get 508.
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Lol I think it's dyed so vw can deny a warranty claim on engine issues , otherwise why bother with a dye ?
 
maduroman said:
Lol I think it's dyed so vw can deny a warranty claim on engine issues , otherwise why bother with a dye ?
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As has been stated here/elsewhere, it was designed so that you knew visually it was 508 and woudln't accidently use it in a car that called for 502 or 504.
 
TiGeo said:
As has been stated here/elsewhere, it was designed so that you knew visually it was 508 and woudln't accidently use it in a car that called for 502 or 504.
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yes, based on the VW SSP and service manual. 504/502 is perfectly fine for cars with 508 when using poor quality fuel. it does not hinder the functionality of the oil pump at all. bearing clearances are identical between motors calling for each spec. you do not want to find out that someone put 0w20 in someone's Golf R

repeating the same info about this 508 spec gets pretty old. should be a big FAQ in the euro forum.
 
scrllock said:
There aren't other 0w20s at a VW dealer. And if it were the other way around, why isn't 504 0w30/5w30 dyed to make sure people don't get 502? Well, because 502 allows for 30 grade oils. No mechanical reason you can't use a 30 grade in a motor spec'd for 502.

OP is worried about nothing and you're going to get another thread locked.
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Thread locked? They're not going to lock a thread because OP wants to stick to manufacturer's spec, and I'm supporting that.

OP's concern is valid, especially since someone mentioned how their VW dealer was putting in random 0w-20 oil (Post #48)

Andyd95 said:
Our local dealer for a long time did not use nor stock 508, they just used a regular 0W20 - can’t remember if Eneos or Idemitsu. Not sure if it’s changed
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Yes, 508 is a specific 0w-20.

Not sure why people are recommending going against the spec. Too many assumptions. I'll bet there are properties about 508 spec beyond simply fuel economy for the engines in which it's specified.

Are we to think that if he puts in 508 that there will be problems? Certainly not. Reasons for recommending otherwise? Since I don't see anyone disclaiming their recommendations of "better oil" with OP's warranty concerns, so OP's best interest isn't the consideration. Seems more about reinforcing a consensus-based reality. There's a reason why I highlighted a certain part of my first reply in bold ;)
 
siriusc1024 said:
Thread locked? They're not going to lock a thread because OP wants to stick to manufacturer's spec, and I'm supporting that.

OP's concern is valid, especially since someone mentioned how their VW dealer was putting in random 0w-20 oil (Post #48)



Yes, 508 is a specific 0w-20.

Not sure why people are recommending going against the spec. Too many assumptions. I'll bet there are properties about 508 spec beyond simply fuel economy for the engines in which it's specified.

Are we to think that if he puts in 508 that there will be problems? Certainly not. Reasons for recommending otherwise? Since I don't see anyone disclaiming their recommendations of "better oil" with OP's warranty concerns, so OP's best interest isn't the consideration. Seems more about reinforcing a consensus-based reality. Kinda why I highlighted my first reply in bold.
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eh, not getting sucked into this. argue with someone else.
 
kschachn said:
So you’re saying that a lower film thickness is beneficial to the turbocharger?

That’s an honest question.
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Yes. They rely on volume for sufficient cooling. Thicker oil flows less for a given pressure. The turbo, be it bearing or journal, isn't highly loaded. If it was highly loaded then it wouldn't spool quickly. It does get very hot.

That's why it's recommended to cool down at idle before shutting down after spirited driving. Some vehicles even have a turbo timer function in the tune so that the turbo reaches a safe temperature threshold before oil supply is stopped.
 
siriusc1024 said:
Yes. They rely on volume for sufficient cooling. Thicker oil flows less for a given pressure. The turbo, be it bearing or journal, isn't highly loaded. If it was highly loaded then it wouldn't spool quickly. It does get very hot.

That's why it's recommended to cool down at idle before shutting down after spirited driving. Some vehicles even have a turbo timer function in the tune so that the turbo reaches a safe temperature threshold before oil supply is stopped.
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The car in question doesn't require a cool down...that's pretty dated advice at this point. They have a pump that circulates coolant after you shut down to handle this.
 
maduroman said:
They still use the dye , but it comes in qt bottles and I have noticed that randomly some do not have the dye in the oil
Now if you check the oil it will look *dark* with the dye in it ,if it doesn’t have the dye it will certainly look a honey color
0w20 as far as know is not available as bulk oil , but bottled only ,if you get any in bulk I would bet it won't have any dye
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Huh? Dye only in the qt. bottles? Uh, no. My dealer has been using bulk 508 since it started being put in some VW engines and has always been dyed. All drums I've seen there also have VAG part # stickers (and stickers from a mysterious lube company in Beaumont TX.) As said all through this thread, 508.00 spec IS a specifically built 0W-20, DOES require the blue dye as part of that spec, and is dyed to help ensure that it is NOT backward filled into any engines calling for 502/504.
 
TiGeo said:
The car in question doesn't require a cool down...that's pretty dated advice at this point. They have a pump that circulates coolant after you shut down to handle this.
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Yep. Just replaced the auxiliary coolant pump on the wagon. It stays running for a good 5 minutes after engine shutdown. Turbo "timers" are ancient turbo tech.
siriusc1024 said:
Yes. They rely on volume for sufficient cooling. Thicker oil flows less for a given pressure. The turbo, be it bearing or journal, isn't highly loaded. If it was highly loaded then it wouldn't spool quickly. It does get very hot.

That's why it's recommended to cool down at idle before shutting down after spirited driving. Some vehicles even have a turbo timer function in the tune so that the turbo reaches a safe temperature threshold before oil supply is stopped.
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Oil is only a small part of the overall turbo cooling, engine coolant handles a larger portion of cooling duties. Thats why we don't see coked bearings as much as we did when oil was the only turbo cooling medium. And at the temps a turbo bearing sees, the infinitesimal flow difference between a 20wt and a 40wt. won't make a bit of difference in cooling anyway.
 
siriusc1024 said:
Yes. They rely on volume for sufficient cooling. Thicker oil flows less for a given pressure. The turbo, be it bearing or journal, isn't highly loaded. If it was highly loaded then it wouldn't spool quickly. It does get very hot.

That's why it's recommended to cool down at idle before shutting down after spirited driving. Some vehicles even have a turbo timer function in the tune so that the turbo reaches a safe temperature threshold before oil supply is stopped.
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How does it flow less volume when the oil pump is constant volume?

I still do not see any compelling technical reason to use a thinner oil. I just see a lot of made up notions that don’t hold true under examination.
 
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here is a picture of fresh 0w30 and 0w20 vw bulk oil from Castrol, you can clearly see the 0w20 has a greenish dye to it.
This oil is supplied by Castrol

0w30
OIL2.webp

0w20
OIL1.webp
 
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well technically you can walk into Any VW dealer and buy it in bottles... but tech as for on off the shelf in the stores that im not sure of


PART NUMBER "G-E-60-020-1Q-DSP" (MOBIL OIL If they still have stock of bottles when Mobil was the supplier )
PART NUMBER "G-C-60-020-1Q-DSP" (Castrol OIL when they switched back to Castrol Jan 1st 2025)
 
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Olds394 said:
Cheap OMNI (osp) ?
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I guess you are randomly responding to me, old timer. Others can ignore this interruption to this absolutely gripping thread

Wife required an OC pronto, so this feeble (almost) 70 year old guy has gotta lie on the wet, dirty ground and get to it. I happened to be near a new O'Reilly's a town over grabbing lunch, saw a window poster for a reasonably priced oil and filter bundle. The poster advertised some uplevel store brand Syntec, but I went with the store brand D1G3 juice and a Microguard filter. Went inside, and a cute little Latino girl helped me pick the stuff I needed. Later at home I poked around online and learned that the store brand oil was blended and packaged by Omni Specialty Packaging out of Shreveport, La and is API Licensed. No worries. HTH Arco
 
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