Project Veloci

[brainy]

does that mean your requirement for thicker oil is masking an issue with your engine?

i just think its strange to throw a CEL because of the grade of oil...

[MH3.0R]

I tried your link and my Internet Security advised the site was hosting Malware, so not going there. Any other links?

[jaydece]

I tried your link and my Internet Security advised the site was hosting Malware, so not going there. Any other links?

worked for me no problems using avast......you need to check your viscosity ratings on your internet security settings

[MH3.0R]

does that mean your requirement for thicker oil is masking an issue with your engine?

i just think its strange to throw a CEL because of the grade of oil...

I think the issue is the pressurisation created by the SC Kit in an NA engine (not originally designed for pressure). Not sure of the details as to why or the full technical explanation other than a lighter oil may be moved away (by pressure) from places where it is needed. Our AVCS is hydraulic (assuming here that it uses the engine oil) in order to adjust the phasing of the intake and exhaust valve timing.

Could be masking something, but I will deal with that when it happens. In the meantime, the old girl is happy with 5W40, so that's what I am feeding her.

And I will still be using Redline until there is some wider harder evidence that indicates to the contrary.

[MH3.0R]

I tried your link and my Internet Security advised the site was hosting Malware, so not going there. Any other links?

worked for me no problems using avast......you need to check your viscosity ratings on your internet security settings

Damn, I set it to Redline 5W40 as well !!! No wonder...

[brainy]

viewtopic.php?f=18&t=17733&p=246825&hilit=Redline+shockproof#p246825

viewtopic.php?f=18&t=12232&p=216446&hilit=Redline+shockproof#p216446

viewtopic.php?f=16&t=8316&p=121044&hilit=Redline+shockproof#p121044

A super quick search just on our forum. Kieran's link seems okay to continue to. Chrome was just being a bit weird.

Reading on the net some more and a conversation I've had with a few mechanics, thicker oil helps mask issues and noise on higher km engines.

I guess your regular oil that you have been using has a higher shear point at that viscosity vs the castrol 5-30 that subaru uses.

[brainy]

does that mean your requirement for thicker oil is masking an issue with your engine?

i just think its strange to throw a CEL because of the grade of oil...

I think the issue is the pressurisation created by the SC Kit in an NA engine (not originally designed for pressure). Not sure of the details as to why or the full technical explanation other than a lighter oil may be moved away (by pressure) from places where it is needed. Our AVCS is hydraulic (assuming here that it uses the engine oil) in order to adjust the phasing of the intake and exhaust valve timing.

Could be masking something, but I will deal with that when it happens. In the meantime, the old girl is happy with 5W40, so that's what I am feeding her.

And I will still be using Redline until there is some wider harder evidence that indicates to the contrary.

You mentioned that your CEL came on during your trip on the way home? This is on the freeway while cruising? Or were you taking a spirited way home with some twisties and bends?
Oil shouldn't be "moving away" that far while cruising home on the freeway right?
Oil pump having issues throwing thinner oil around maybe? (just trying to get a better understanding here, that's all).

Any other thoughts anyone?

[MH3.0R]

does that mean your requirement for thicker oil is masking an issue with your engine?

i just think its strange to throw a CEL because of the grade of oil...

I think the issue is the pressurisation created by the SC Kit in an NA engine (not originally designed for pressure). Not sure of the details as to why or the full technical explanation other than a lighter oil may be moved away (by pressure) from places where it is needed. Our AVCS is hydraulic (assuming here that it uses the engine oil) in order to adjust the phasing of the intake and exhaust valve timing.

Could be masking something, but I will deal with that when it happens. In the meantime, the old girl is happy with 5W40, so that's what I am feeding her.

And I will still be using Redline until there is some wider harder evidence that indicates to the contrary.

You mentioned that your CEL came on during your trip on the way home? This is on the freeway while cruising? Or were you taking a spirited way home with some twisties and bends?
Oil shouldn't be "moving away" that far while cruising home on the freeway right?
Oil pump having issues throwing thinner oil around maybe? (just trying to get a better understanding here, that's all).

Any other thoughts anyone?

Actually, it came on when I accelerated out of the tunnel, so a little bit of load plus some wider throttle and it came on. I was able to clear it by cycling the Cruise Control switch, but then on hard acceleration, it would come on again. So it was always on acceleration, not cruise, and generally with more than 50% throttle.

[MH3.0R]

http://forum.liberty.asn.au/viewtopic.php?f=18&t=17733&p=246825&hilit=Redline+shockproof#p246825

viewtopic.php?f=18&t=12232&p=216446&hilit=Redline+shockproof#p216446

viewtopic.php?f=16&t=8316&p=121044&hilit=Redline+shockproof#p121044

A super quick search just on our forum. Kieran's link seems okay to continue to. Chrome was just being a bit weird.

Reading on the net some more and a conversation I've had with a few mechanics, thicker oil helps mask issues and noise on higher km engines.

I guess your regular oil that you have been using has a higher shear point at that viscosity vs the castrol 5-30 that subaru uses.

Followed the links, but not convinced that the issues could be attributed to the Redline oil. I don't know the full history or treatment of those gearboxes and in any case, mine is a highly modified auto and centre diff so too many differences to make any generalisations or assumptions. I guess time will tell...

[dr20t]

Castrol is garbage oil

And before anyone tries the "why does Subaru use it" line, you must all come to the realization Subaru cares 0 for your car if it does not align to their bottom line. It's a dearership only oil that they use in bulk and pay peanuts for. Definitely not something you want your performance orientated motor being lubricated by

Thicker oil can mask problems but there is nothing wrong with that - as a problem really isn't a problem until you cannot find a suitable and feasible solution. For eg - if 5w 30 is revealing piston slap or oil consumption, then this may be ok for some people. However if using say 10w40 eradicates those two issues, then technically it's "masking" your piston slap and ring wear problem isn't it? But I would say 90% of people wouldn't have a problem using a thicker oil in this instance to mask the problem, as the alternative is put up with the symptoms and continue using thinner oil, which will cause further wear; or rebuild

One more thing - if it's a pump thing, then the thicker oil will actually expose the fault more than the thinner one. Thicker oil after certain rpm is tougher to throw around, and will actually pressurize higher than lower viscosity oil

[KiDo_Tuning]

VVL activates above 4800rpm hence the solenoids being an issue under hard acceleration

The ECU has a self learning memory in an RAM memory area close to the FLKC learnt parameters region etc. So the oil pressure table has a 15% variable on Marks ECU(yep, just checked the tune in stock form and modified form, both idenitcal) so it would make sense that IF the oil was changed, it might take the ECU a hundred kilometres or so to self learn the new oil control valve duty cycle on the VVL solenoid.

[MH3.0R]

VVL activates above 4800rpm hence the solenoids being an issue under hard acceleration

The ECU has a self learning memory in an RAM memory area close to the FLKC learnt parameters region etc. So the oil pressure table has a 15% variable on Marks ECU(yep, just checked the tune in stock form and modified form, both idenitcal) so it would make sense that IF the oil was changed, it might take the ECU a hundred kilometres or so to self learn the new oil control valve duty cycle on the VVL solenoid.

Now, that is making sense. And combined with the thinner oil and lower pressures at the sensors, I can now understand why the malfunction occurred.

Thanks for all the contributors.

Now, any real data on the Redline oil versus Subaru mechanicals as a general statement? Or was it a once off and a one person opinion? Happy to take new links as I spend a premium on oil and I expect the best. Mind you, some of my mechanicals are no longer Subaru.

[KiDo_Tuning]

Using NeoRacing Engine oil here but have used Redline in the gearbox of my S206, Forester and Pulsar.

[<GB>]

I had read stuff about redline oil in gearboxing foaming up I think... But I thought u needed to flush the gearbox with read line oil to get rid of any other oil residue, never heard much bad about the engine oil issues I wouldn't run 5w in a high km car, 10 min my cars engine builder said motul 15w for mine... I hope I don't have issues !

[MH3.0R]

My transmission and centre diff were completely pulled down and rebuilt, then fed pure unadulterated Redlline oil, about 11 litres in all. When I did my head gaskets, they also completely flushed the oil and again refilled completely with Redline 5W40.

In oil specs, the 1st number (0W, 5W, 10W, etc) is the negative temperature rating, the lowest temp at which the oil remains viscous. So 0W is good for zero degrees C, 5W is good for -5, 10W is good for -10, etc. The actual viscosity or thickness is the second number, 30, 40, 50, with 50 being thicker than 40, which is thicker than 30, etc.

Subaru normally used a 30 class oil. I am using one grade thicker, a 40 class. Engine has been running well on it now for 2 to 3 years. Front and Rear diffs are also using Redline diff oil, the rear being an LSD and the front being a viscous coupling (I think???). I know at least the diff oil for one is not the same as the other!