Synthetic blend drain intervals.

[Dyoel182]

No. The base oil is synthetic. It is not the additive package that makes it synthetic. Synthetic blends use a combination conventional oil and synthetic oil base stocks before the additive package.

Yes you're right I had that switched in my head. Most synthetics have a fully synthetic base stock and then a mixture of additives to that.

 

[Schem]

OK, I mean, that what we call "semi-synthetic" is mineral oil base, hydrocracked into small molecules, and then rearranged/rebuild into large ones. It's better, then natural, conventional oil, because the chains are more organised.

But fully synthetic oil, is the third kind of oil.
And fully synthetic is, in my opinion, made NOT from the natural base of oil, but by polymerisation of esters. Motul 300 V for example.

Sometimes, companies write "synthetic technology", or "synthetic blended" or something on a bottle... but it doesn't mean, that it IS 100% synthetic oil.
So, I suppose, that you call synthetic, what I call semi-synthetic...

 

[Dyoel182]

Sometimes, companies write "synthetic technology", or "synthetic blended" or something on a bottle... but it doesn't mean, that it IS 100% synthetic oil.
So, I suppose, that you call synthetic, what I call semi-synthetic...

I didnt think any readily available oil out there is 100% synthetic though.

 

[Big Jim]

OK, I mean, that what we call "semi-synthetic" is mineral oil base, hydrocracked into small molecules, and then rearranged/rebuild into large ones. It's better, then natural, conventional oil, because the chains are more organised.

But fully synthetic oil, is the third kind of oil.
And fully synthetic is, in my opinion, made NOT from the natural base of oil, but by polymerisation of esters. Motul 300 V for example.

Sometimes, companies write "synthetic technology", or "synthetic blended" or something on a bottle... but it doesn't mean, that it IS 100% synthetic oil.
So, I suppose, that you call synthetic, what I call semi-synthetic...

Esters fit into Group V. Most synthetics do not use much if any Group V in their blend. One of the better known brands that is mostly Group V is Red Line.

All of these, start with crude oil.

Synthetic Blends are mostly Group II or Group II+ with about 20% synthetic, usually Group III.

Motorcraft and its clones (Conoco, Phillips, 76, and Kendall) do not have a conventional oil. Their lowest level oil is Group II with Group III and are all called "semi synthetic" due to the Group III content.

Pennzoil Platinum, Valvoline (whatever they call their full synthetic), Castrol Syntec, and others use Group III for their "Full Synthetic" oil.

No one uses only Group III for what they call "semi synthetic" or "synthetic blend".

Castrol and Valvoline market either semi synthetic or synthetic blends that are Group II and Group III.

Mobil markets a synthetic blend (7500) that is either Group II or Group III with about 20% Group IV.

 

[Schem]

Where can I read about groups, you wrote?

I agree, that 99% of "synthetic" oils are just hydrocracked conventional oils...
But I've been told, that there are 100% synthetic oils on the market

For example. Mobil "1" series, the newest ones, with SuperSyn technology are 100% synthetic.
Mobil Synt S is not fully synthetic oil, even the name suggests it

Motul 300V and 8100 series are made by double ester polymerisation method... so they are 100% synthetic also...

The reputation of Motul products for quality and performance was founded on the skills and experience of our engineers in the formulating of 100% synthetic ester-bases lubricants.

- from their website

The topic become a little bit OT, but it's interesting, to compare american and european market
I'm not working in the oil industry, so I'm not an expert. And I'm glad to learn something

 

[Big Jim]

Where can I read about groups, you wrote?

I agree, that 99% of "synthetic" oils are just hydrocracked conventional oils...
But I've been told, that there are 100% synthetic oils on the market

For example. Mobil "1" series, the newest ones, with SuperSyn technology are 100% synthetic.
Mobil Synt S is not fully synthetic oil, even the name suggests it

Motul 300V and 8100 series are made by double ester polymerisation method... so they are 100% synthetic also...
- from their website

The topic become a little bit OT, but it's interesting, to compare american and european market
I'm not working in the oil industry, so I'm not an expert. And I'm glad to learn something

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