What oil are u using for your integra

[string]

That's right Arron, what I mean was engine responds better to 5W-30 rather than 10W-40.

You can get Royal Purple from IS Motor Racing and a whole bunch of place around Artamon. It's recommended that you use thicker oils with more KM's. But saying that, if you aren't buring any oil, stick to 5W-30, and enjoy the response from a thinner oil while you can . I honesly reakon there could be a loss of anywhere up to a second at Wakefield using 10W-40 opposed to 5W-30.

One second at Wakefield, nice joke! If you want response, start removing mass from the rotating assembly where you will feel the difference, not imagine it due to the price you paid for an oil.

[VTECMACHINE]

Ha ha ha.

Both viscosities are the same price and same brand. One is thinner than the other. In my car with a B18C7, it makes a HUGE difference. I can honestly say at least 1/2 second, if not 1 second at Wakefield. Would be more noticable at a drag strip I reakon. have tried a few different viscosities in my Dad's euro, and sister's Civic and the difference is barely noticable.

yes and I know removing mass from rotating assembly etc will make more of a difference, but in terms on engine oil... viscocities make a world of difference.

Just curious, what testing have you done on oils yourself?

[aaronng]

1 second per lap is optimistic in my opinion. Even putting on sports headers, I don't think it made a difference to my time, eventhough I had additional midrange torque.

[string]

None; which is why I'm not making any claims myself.

I have however driven at Wakefield a few times, and know how much extra power a car would require to gain 0.5-1.0 seconds. Energy that would be otherwise dissipated into the thicker oil.

Out of intrest, do you have an oil temperature gauge? And if so, did you notice a difference in the normal temperature of the oil when changing viscosity?

[VTECMACHINE]

None; which is why I'm not making any claims myself.

I have however driven at Wakefield a few times, and know how much extra power a car would require to gain 0.5-1.0 seconds. Energy that would be otherwise dissipated into the thicker oil.

Out of intrest, do you have an oil temperature gauge? And if so, did you notice a difference in the normal temperature of the oil when changing viscosity?

First and foremost, I did not mention power, but response. Something I think is more important than power, especially at Wakefield. Ok maybe 1.0 second is exagerated, but I would honestly say 0.5. Well from my experiences this is true. I am always alot slower using 10W-40 rather than 5W-30 due to the lack of response, 1 - 1.5 seconds (could be other factors though, but the engine response is what kills me the most coming out of corners especially when sliding).

Yes I have an oil temp gauge, but cannot comment on normal temps of oil with different viscosities as they are all on different days, with different tunes.

[l3vnd1]

So thinner oil is better for response, However a thicker oil protects better at higher temperatures.

Hmmmm....

Can you Mix 5 - 30 with 10 - 40 and make a hypothetical 7.5w - 35w? (like octane)

[VTECMACHINE]

So thinner oil is better for power and response, However a thicker oil protects better at higher temperatures.

Hmmmm....

Can you Mix 5 - 30 with 10 - 40 and make a hypothetical 7.5w - 35w? (like octane)

Correct about response and I guess power. All depends on additivies and stuff and the properties of the oil. It's hard to say what oil protects better. But as a rule, I say thicker at higher temps to protect... so yeah if I were you, i'd use 10W-40 in summer for track work.

NFI about mixing... why bother?

[string]

First and foremost, I did not mention power, but response. Something I think is more important than power, especially at Wakefield. Ok maybe 1.0 second is exagerated, but I would honestly say 0.5. Well from my experiences this is true. I am always alot slower using 10W-40 rather than 5W-30 due to the lack of response.

Other than increased overall power output, how else do you think the car is going to go faster around the track? Unless you're going to tell me that this Royal Purple engine oil will also reducing braking distances and increase the grip of my tyres?

Yes I have an oil temp gauge, but cannot comment on normal temps of oil with different viscosities as they are all on different days, with different tunes.

So how can you compare the responsiveness in different conditions and more significantly, states of ecu tune and then attribute it solely to the oil?

[aaronng]

Can you Mix 5 - 30 with 10 - 40 and make a hypothetical 7.5w - 35w? (like octane)

Doesn't really work that way. But I do have 1L of Elf 5w-30, 2L of Edge 5w-30 and 1L of Mobil 10w-40 in my engine now.

[VTECMACHINE]

Other than increased overall power output, how else do you think the car is going to go faster around the track? Unless you're going to tell me that this Royal Purple engine oil will also reducing braking distances and increase the grip of my tyres?

It's easier to control a car at it's limits when you have good response of an engine under your belt. What times, and what car you using? Just curious...

So how can you compare the responsiveness in different conditions and more significantly, states of ecu tune and then attribute it solely to the oil?

Because I have switched tunes every 3 track days or so, and used different viscocities with the same tune. It's easy to feel engine response. And quite obvious when you go for an OPH run on 5W-30, then change oil to 10W-40 that day, then go for another OPH run. Different viscoties DO make large difference to engine response, and like I have said it's easier to note on some engines rather than others.

[string]

It's easier to control a car at it's limits when you have good response of an engine under your belt. What times, and what car you using? Just curious...

No official timing but 1:18~ was best from the recordings on a particular day. Chassis is a stock motor 130hp aus DA9. Many seconds left to gain with the setup, can't wait to get back. With the RPM high enough, even my non-vtec heap of garbage is plenty responsive simply due to the massive intake air velocity - having more engine response wouldn't have gained me even 0.1seconds, unless it somehow fixed my completely misaligned front end in the process giving me catastrophic understeer at the hint of steering input.

How quick are you in your DC2R?

[l3vnd1]

Hey Ricky;

Thanks for the tip - IS Motor racing were really helpful. Just got back with a 5L Royal Purple 10w - 40w for $80.