Gulf Competition Cheap Ester based oil?

[fdcg27]

Basestock does have considerable impact in the cleaning ability of an oil.
Esters have higher solvency that most other basestocks and higher polarity as well, so they can offer better cleaning ability. In contrast, Grp IVs have low solvency and polarity so require additives to mitigate these things. Esters are also kind to seals while Grp IVs require additives for this.
There are even cleaning and seal conditioning products that consist of nothing more than esters. ARX comes to mind.
In the bad old days before we had all of these fancy additive packages, it was the solvency and polarity of the basestock that allowed the oil to work well enough on short drain intervals.

 

[BrocLuno]

Originally Posted By: Jetronic
you're losing about 1 hp at high rpm, less at lower rpm.


Exactly.

You loose more HP to road surface condition or WAY more to wet/dry, or a slightly dragging brake pad , etc. Tire pressures can make 20X the difference in oil grades ...

 

[slybunda]

Cool i think i will stick to the shell oil then which is 40% cheaper.
Anything wrong with using a group 3 oil for 6k intervals?

 

[BrocLuno]

Originally Posted By: slybunda
Will the higher hths impact engines ability to rev up quickly?


See above, I missed the quote button on this one ...

 

[BrocLuno]

Originally Posted By: slybunda
Cool i think i will stick to the shell oil then which is 40% cheaper.
Anything wrong with using a group 3 oil for 6k intervals?


Nope

 

[4WD]

How funny - worked at a Gulf when I was (best not post age) and Single G and Multi G were the cans we filled with

 

[UltrafanUK]

Originally Posted By: slybunda
Ahh cool. So the ester oil cleans better? I thought ester was just for lubrication and additives and detergents do the cleaning?


True, nothing beats a real good add pack, although the base stock type and viscosity do have a minor effect. They don't seem to make group 2 car oils too much, as they sheared a lot, but did need less in the way of detergents. Some aviation oils never even used detergents as their very basic dino base oils were good enough cleaners for the typical 100 hr OCI for a piston engine.

 

[bobbydavro]

Originally Posted By: UltrafanUK
Originally Posted By: slybunda
Ahh cool. So the ester oil cleans better? I thought ester was just for lubrication and additives and detergents do the cleaning?


True, nothing beats a real good add pack, although the base stock type and viscosity do have a minor effect. They don't seem to make group 2 car oils too much, as they sheared a lot, but did need less in the way of detergents. Some aviation oils never even used detergents as their very basic dino base oils were good enough cleaners for the typical 100 hr OCI for a piston engine.


Aviation oils? Are you talking about world war 2 planes ?!

 

[weasley]

Originally Posted By: UltrafanUK
Some aviation oils never even used detergents as their very basic dino base oils were good enough cleaners for the typical 100 hr OCI for a piston engine.


The reason air-cooled aviation engines use ashless oil is because they burn a little oil in use, and metallic additive elements can cause deposits that lead to pre-ignition. Such oils are either straight mineral or are mineral with ashless dispersants added. You can not say (or imply) that these oils would be useful cleaners in a water-cooled automotive engine, because the applications and servicing requirements are worlds apart.

 

[slybunda]

Are there any other cheap ools that contain esters?

 

[bobbydavro]

Why do you want esters, to the above Gulf comments. You are comparing ASTM methods to Russian GOST methods ?!

 

[Virtus_Probi]

Originally Posted By: slybunda
specs

I just noticed that this is barely a 30 by the D445 viscosities...everybody would jump on it for having sheared if those numbers came up in a UOA.
Surprising to me that its HTHS is 3.58, but I probably just don't understand all the different viscosity measurements well enough...

 

[Jetronic]

The 0w-30 in that table doesn't have a 3.58 cP hths... no way, no how. You'll be lucky to have a 3.0 cP HTHS from that

 

[Mitch Alsup]

Originally Posted By: Jetronic
The 0w-30 in that table doesn't have a 3.58 cP hths... no way, no how. You'll be lucky to have a 3.0 cP HTHS from that


Actually, you will be lucky to have an HTHS of 2.6 cP.

But, how can a company label an oil as "competition" without putting the HTHS numbers on the main data sheet?

 

[Jetronic]

Originally Posted By: slybunda
Are there any other cheap ools that contain esters?


In any meaningful amounts? No. Esters are expensive, and drive up the cost of oil.

Gulf Formula G 0w-30 is one of the cheapest ones available here. http://www.opieoils.co.uk/p-79208-gulf-formula-g-0w-30-fully-synthetic-engine-oil.aspx

 

[slybunda]

Is that a group 3 synthetic?

 

[Ether]

Gulf Competition is a GL4 and GL5 Oil.Gulf Formula G is Group 3

 

[Jetronic]

Gulf formula G 0w30 is PAO/ester. all the other viscosities in formula G are group 3.

 

[Lowflyer]

Latest analysis on oil-club.de says, addpack in 5W-40 is now completely different than before and than in 10W-40. Requests to opieolis are underway...
Imho very sad story.

edit:
And what with current fresh 10W-40? Confidence... fly off...

 

[Tequila009]

Hi from germany, oil-club.de..

Gulf has also changed the formulation of the Competition 10W-40.

Take a look at this.
VOA: Gulf Competition 10W-40
UOA: Gulf Competition 10W-40 - BMW N62TU - 7.200km 120h
VOA: Gulf Competition 5W-40

There is no tungsten left. And molybdenum is very little.