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Castrol SLX Professional LL03 5W-30 - VOA 2010/07
- Thread starter OldBaldy
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Low TBN.
Yup, it's a VW 504/507 oil
Yup, 30000km+ oil. Fully certified by VW/Audi. It is also a VW/Audi specific oil.
Originally Posted By: BigJohn
Glad I found this VOA. I just purchased a Touareg TDI and VW is saying to do 10k OCI's.
With the TBN so low.....makes me nervous.
On the other hand, the sump is nearly 9 quarts....so maybe it is ok.
Thoughts?
I would use the M1 5W-30 ESP if I wanted to do 10k OCIs.
Glad I found this VOA. I just purchased a Touareg TDI and VW is saying to do 10k OCI's.
With the TBN so low.....makes me nervous.
On the other hand, the sump is nearly 9 quarts....so maybe it is ok.
Thoughts?
I would use the M1 5W-30 ESP if I wanted to do 10k OCIs.
The very low TBN is why I'm switching our BMW X5 35d from Castrol SLX Professional OE to Delvac 1 LE 5W30.
It has a TBN>12 despite SA = 1.0%
On my first UOA I had a TBN of 1.5 and a TAN of 4.83 on the Castrol at 10K miles despite a 9L sump.
Scary.
Charlie
It has a TBN>12 despite SA = 1.0%
On my first UOA I had a TBN of 1.5 and a TAN of 4.83 on the Castrol at 10K miles despite a 9L sump.
Scary.
Charlie
Originally Posted By: m37charlie
The very low TBN is why I'm switching our BMW X5 35d from Castrol SLX Professional OE to Delvac 1 LE 5W30.
It has a TBN>12 despite SA = 1.0%
On my first UOA I had a TBN of 1.5 and a TAN of 4.83 on the Castrol at 10K miles despite a 9L sump.
Scary.
Charlie
Good move, I would've done the same. Though, the 10k OCI ensures the oil SUGGESTED will "woooork".
The very low TBN is why I'm switching our BMW X5 35d from Castrol SLX Professional OE to Delvac 1 LE 5W30.
It has a TBN>12 despite SA = 1.0%
On my first UOA I had a TBN of 1.5 and a TAN of 4.83 on the Castrol at 10K miles despite a 9L sump.
Scary.
Charlie
Good move, I would've done the same. Though, the 10k OCI ensures the oil SUGGESTED will "woooork".
Originally Posted By: BobFout
I wonder if there are any additives that don't show up in UOAs...
Yes, but that shouldn't affect the oil's ability to neutralize acid.
I wonder if there are any additives that don't show up in UOAs...
Yes, but that shouldn't affect the oil's ability to neutralize acid.
The link in the original post did some odd redirecting and my virus software blocked a malicious site from loading.
Just a warning.
Just a warning.
The high Al may explain why some TDI are showing high Al on factory fill UOA. This is the factory fill for the 2.0 TDI, and also what most dealers should be using with the free oil changes.
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