[Jaw_F430]

As some of you may know I have been testing some oil opposed to OEM.

On thursday I posted that my base run was 248bhp with OEM and then 251.7 with Special oil but on looking at my dyno graphs the oil actually made a bit more power than 3.7bhp. The reason being that the base run was run 2 and the oil run which made 251.7 was run 3 so therefore there was more heat in the engine and intercooler.

If I compare back to back i.e run 2 with run 2 the oil made a difference of. . . . . . . . . 8.4bhp

So that is a gain of just over 3% from an oil change. And yes it is a 5W30 plus I am told it gives better protection i.e less wear on internal parts ( Also I have seen lower oil temp on road use compared with OEM, would like to see it on track)

[BigShow]

10 litres please!

[sam_a156]

Will you ship to Poland?

[Jaw_F430]

Quote: Originally Posted by sam_a156 (original)

Will you ship to Poland?

I am only testing it

Will try and find out when it will be on the market

[sam_a156]

I know, but still amazing number from...oil

Can there be any other variables explaining at least partly your results, e.g. IATs being different?

[supercoopers]

You'd have to compare fresh oil from say Mobil with this other oil you're testing - i.e. you'd have to do an oil change, dyno, reset ECU then oil change and dyno again. 3 runs on each and then take an average. Even then the scientific objectivity of a sample of 3 would be pitiful

I can and do believe that an oil change could give a delta of about 5bhp, especially if the oil you were running on the first few runs had been in the car since bedding in (think of all the micro clumps of iron and aluminium from your block and pistons during bed in)

I believe that small manufacturers like Millers do make good oils, don't get me wrong, but I'd rather put my money behind an oil with millions of R&D dollars to its name, such as Mobil 1 (ExonnMobil group).

That is unless, of course, the small manufacturer has come up with a truly revolutionary and proprietary technology that can independently show gains over other offerings whilst reducing wear (I'd want to see big-end wear analyses at 50K and 100K miles on different test engines under different conditions i.e. track and road use) to be convinced.

My 2p

H

[DaFlake]

I'm curious about this "special" oil as well. I have been running Royal Purple 5w30 for the last 6 months and feel a difference in the car over the running of Mobil One.

[BigShow]

I've never really given much thought to oil choice, aside from using the best I can so this thread is really interesting.

Have any oil tests been done like say Thorney's petrol test to show bhp gains?

[MINIMANIAUK]

There is more to oil than the base BHP gains, an important one is the amount of phosphorus used in the oil -a small amount in parts per million is added for lubrication of valves ,this however reduces the amount of life in the cat converter , (its an imperfect world)
The US I think have reduced levels of Phosphorus -to keep cat life high ,In Europe its the other way round more biased to valve life .down to some US legislation or other!
Mobil 1 ,has higher P -valve friendly ,others I do not know.
certainly there could well be gains in output with very low friction oils ,but I would not know the other effects

[Jaw_F430]

Quote: Originally Posted by MINIMANIAUK (original)

There is more to oil than the base BHP gains, an important one is the amount of phosphorus used in the oil -a small amount in parts per million is added for lubrication of valves ,this however reduces the amount of life in the cat converter , (its an imperfect world)
The US I think have reduced levels of Phosphorus -to keep cat life high ,In Europe its the other way round more biased to valve life .down to some US legislation or other!
Mobil 1 ,has higher P -valve friendly ,others I do not know.
certainly there could well be gains in output with very low friction oils ,but I would not know the other effects

Don't worry guys, there is no way I would sacrifice reliability for power I was just curious and my results are as above (cooler running and just over 3% gain without loss of protection)

Going to try some gearbox oil next

[Jaw_F430]

Quote: Originally Posted by supercoopers (original)

You'd have to compare fresh oil from say Mobil with this other oil you're testing - i.e. you'd have to do an oil change, dyno, reset ECU then oil change and dyno again. 3 runs on each and then take an average. Even then the scientific objectivity of a sample of 3 would be pitiful

I can and do believe that an oil change could give a delta of about 5bhp, especially if the oil you were running on the first few runs had been in the car since bedding in (think of all the micro clumps of iron and aluminium from your block and pistons during bed in)

I believe that small manufacturers like Millers do make good oils, don't get me wrong, but I'd rather put my money behind an oil with millions of R&D dollars to its name, such as Mobil 1 (ExonnMobil group).

That is unless, of course, the small manufacturer has come up with a truly revolutionary and proprietary technology that can independently show gains over other offerings whilst reducing wear (I'd want to see big-end wear analyses at 50K and 100K miles on different test engines under different conditions i.e. track and road use) to be convinced.

My 2p

H

If I had put brand new oil in before the first dyno run I would probabily have seen more of a gain as most oils shear down with use due to them containing polymer thickeners (this new oil does not use any of these i.e the oil with come out the engine the same viscosity as it went in) and also there is a potential for fuel dilution with old oil.

Some data for you all: Spoke to the formulation chemist today and he told me some camwear data:

The API SL limit for camwear is 120microns

The special oil I am testing passed the test @26microns (less than a 1/4 of the wear allowed!)

As I said before I would not sacrifice reliability/protection for power