VOA add packs

Joined
Jul 27, 2021
Messages
1,761
Location
Dover Delaware
When looking at the VOA add packs, why does it appear that Valvoline, Castrol and PUP have the strongest? I know that does not count for the base oils that are used..
 
Have you looked at Amsoil or HPL? I'd say they are "stronger" than the ones you mentioned.
Also, please do realize that not all additives show up in a simple ICP spectrometry analysis.
If you look at something like Pennzoil Euro L 5W-30 you start wondering how it even works, or Shell Rotella T6 MV 5W-30. Yet they both have several OEM and industry leading approvals.
 
Have you looked at Amsoil or HPL? I'd say they are "stronger" than the ones you mentioned.
Also, please do realize that not all additives show up in a simple ICP spectrometry analysis.

Most importantly, don't judge a lube by what's in the bottle. (inputs)
Judge it by how well it performs in the crankcase. (outputs)
I was going by what's on shelves..
 
When looking at the VOA add packs, why does it appear that Valvoline, Castrol and PUP have the strongest? I know that does not count for the base oils that are used..
VOA doesn't show enough. There are additives which don't appear in a VOA and you can't deduce the type of additive. VOA's are rather pointless. UOA is good for things like viscosity retention, fuel dilution, and excessive wear metals. Not so much about additives.
 
It's really difficult to determine how good an add pack is from looking at an elemental analysis. Some additives are non-metallic and won't even show up. There are also many different forms of similar additives that are made up of the same elements. Some forms require higher concentrations than others to be effective.

Many additives also compete at the surfaces of engine components. An oil that has more calcium-based detergents will also require more friction and anti-wear additive to perform well.

How well additives hold up over an OCI also depends on the anti-oxidant performance of the oil. An oil with good oxidation performance won't require as much of certain additives.

Also, more is not always better. Some additives can contribute to deposits, increase friction, increase the risk of LSPI, etc.

There's a reason oil standards are based on expensive engine testing requirements, and not on elemental analysis (aside from phosphorus and sulfur limits).
 
It's really difficult to determine how good an add pack is from looking at an elemental analysis. Some additives are non-metallic and won't even show up. There are also many different forms of similar additives that are made up of the same elements. Some forms require higher concentrations than others to be effective.

Many additives also compete at the surfaces of engine components. An oil that has more calcium-based detergents will also require more friction and anti-wear additive to perform well.

How well additives hold up over an OCI also depends on the anti-oxidant performance of the oil. An oil with good oxidation performance won't require as much of certain additives.

Also, more is not always better. Some additives can contribute to deposits, increase friction, increase the risk of LSPI, etc.

There's a reason oil standards are based on expensive engine testing requirements, and not on elemental analysis (aside from phosphorus and sulfur limits).
Thanks. All this reading of the tea leaves (generally from untrained and unqualified individuals) using a $30 spectrographic analysis to predict the relative quality or future performance of a motor oil is quite a popular exercise on Bitog.
 
I don't doubt that.. what do you personally use?
I run HPL in all my vehicles (except my Subaru with leaky HGs), in my zero turn and hydrostats, in my Polaris Sportsman 450HO, and my generator.

HPL Dave has made at least 3 new product lines for my applications, so I happily spend the slightly higher amount for the added protection and customer service they provide. Some members get their panties in a wad about my enthusiasm for HPL, even though I agree it’s not right for everyone and that many can resort to WM shelf-stock their entire lives without issue.

My job depends on having known suppliers who ALWAYS come thru, from machine shops, to parts distributors, to HPL. They’re transparent about what’s in their products, and just this week I placed a hot order with HPL’s Mary Jane at 2:30pm Tuesday, and at 10am Wednesday morning my company had the case of HPL custom lube in-hand in Oklahoma. Now that’s justification!
 
VOA doesn't show enough. There are additives which don't appear in a VOA and you can't deduce the type of additive. VOA's are rather pointless. UOA is good for things like viscosity retention, fuel dilution, and excessive wear metals. Not so much about additives.
VOAs are necessary so you know initial concentrations, oxidation, etc, if you’re really going for maximum length OCIs. If you’re changing Mobil 1 EP at 3k, not so much.
 
This is a copy of a UOA I had done using Mobil 1 Advanced about 3,000 MI after I had my timing chain, water pump, and tensioners replaced.

Screenshot_20240126-175608~4.jpg
 
Back
Top