Simple question on oil viscosity
What is best for a holden red 6
10-40
15-40
20-40
Not concerned with brands, that all about you wallet size
Oil viscosity
Started by
_Muzzy_
, Jul 30 2014 06:20 PM
93 replies to this topic
#2
_J.A.W._
_J.A.W._
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Posted 30 July 2014 - 06:29 PM
20-60 - esp' in warmer weather.. (where a big capacity sump/oil cooler is also good if you're gonna cane the tits off it)..
& chuck some Moly &/or PFTE in too..
#3
_Bomber Watson_
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Posted 30 July 2014 - 07:01 PM
15-40 seems to work well in most high rpm and suitably clearanced street engines, say .002 on the big ends and .002.5 on the mains.
Knowing your engine combo, and assuming its got reasonably stock clearances, i'd stick to that at the highest or perhaps the 10-40.
Mind the SAE ratings are pretty irrelevant, as explained far better than i could ever try to by the old prick:
http://oldjohnno.id.au/page110.html
Cheers.
Edited by Bomber Watson, 30 July 2014 - 07:02 PM.
#4
_Muzzy_
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Posted 30 July 2014 - 07:02 PM
Simple question on oil viscosity
What is best for a holden red 6
10-40
15-40
20-40
Not concerned with brands, that all about you wallet size
The engine is running 15-40 oil now and up for its first change from a full rebuild and is only a mild engine in a cruiser with 2.78:1 diff I love the low RPM was thinking 10-40 as it has ACL 001" plus bearing so the running clearances are at minimum between 0015 and 002"
Edited by Muzzy, 30 July 2014 - 07:12 PM.
#5
RallyRed
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Posted 30 July 2014 - 07:06 PM
Yep...as per Bombers post..when I needed to know the answer to this..I refered to the Good Book by Old Johhno
#6
_oldjohnno_
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Posted 30 July 2014 - 07:11 PM
There's more info here http://www.oldjohnno.../OilTables.html
Just remember the SAE numbers only give a vague indication of viscosity. Additives are unneccesary and undesireable, for an application like yours Penrite Everyday 15-40 or Delo 400 would be fine, as would many many others.
#7
_J.A.W._
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Posted 30 July 2014 - 07:54 PM
Penrite recommendation for Torana 6 is 20w/60 or 25w/70.. http://www.datateck....ube/PenriteAus/
#8
_Muzzy_
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Posted 30 July 2014 - 08:37 PM
Penrite recommendation for Torana 6 is 20w/60 or 25w/70.. http://www.datateck....ube/PenriteAus/
I read their website, and they assume the engine is old oil burner
I think I will try the 10-40 until summer than switch to 15-40
#9
_J.A.W._
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Posted 30 July 2014 - 08:41 PM
Don't assume, or 2nd guess, - that may be for a zero time or post overhaul spec job....ring 'em up if you are unsure..
#10
_Bomber Watson_
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Posted 30 July 2014 - 08:42 PM
I recon your on the Money Muzzy.
#11
_J.A.W._
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Posted 30 July 2014 - 08:48 PM
He just done spent money on a freshen up, best put the correct oil in it if you want it to hang together..
.. even premium oil is cheap compared to another rebuild caused by faulty assumptions or poor advice..
#12
_ljxu1torana_
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Posted 30 July 2014 - 08:57 PM
one of the best oils i have used and lasted for a long time is mobil 5-50 oil.
#13
_oldjohnno_
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Posted 30 July 2014 - 09:04 PM
Penrite recommendation for Torana 6 is 20w/60 or 25w/70.. http://www.datateck....ube/PenriteAus/
I based my recommendation on knowledge of Muzzy's engine that I have.
As far as I know, no-one at Penrite is familiar with his engine, but if you'd rather take the advice of some spotty faced kid on the end of the helpline go for it.
But anyway JAW I'm tired of you're constant interjections and empty advice, so I'm out of here. I know damn well that you're going to ignore this but I'll say it anyway: bad information is worse than no information at all; sometimes it's best to say nothing than just blurt out whatever comes into your head just for the sake of conversation.
Cheers Fellas!
#15
_Bluejinx202_
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Posted 30 July 2014 - 10:04 PM
It's such a shame one bad apple can stuff up what has been a great place to learn and enjoy for so long....
#16
orangeLJ
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Posted 30 July 2014 - 10:06 PM
And there goes the best reference tool for holden six engines the site had.
God GMH has gone downhill lately, anyone else notice that the regulars that made this site a nice place to frequent are all no longer posting....
Instead we have the Brady bunch and their tinfoil hat brigade.
God GMH has gone downhill lately, anyone else notice that the regulars that made this site a nice place to frequent are all no longer posting....
Instead we have the Brady bunch and their tinfoil hat brigade.
#17
_Muzzy_
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Posted 30 July 2014 - 10:07 PM
All good. I reckon I have pretty fair mechanical knowledge, however very limited when it comes to holden sixes, Funny this was the first holden engine I had ever built hence my question asking on oil. I will stick with OJ and bombers advise as holden gurus.
Funny the oil websites aren't that smart, I own a NW pajero that does not have a DPF on the exhaust, however they claim it has one
For the record a DPF was fitted to a NS Pajero, then deleted later.
Funny the oil websites aren't that smart, I own a NW pajero that does not have a DPF on the exhaust, however they claim it has one
For the record a DPF was fitted to a NS Pajero, then deleted later.
#18
EunUCh
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Posted 30 July 2014 - 10:11 PM
I think we best go to pie shop for a yarn and good advice ... 
#19
_Bomber Watson_
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Posted 30 July 2014 - 10:16 PM
Im there. But its closed, and cold, and theres no one else here, might try the next pie shop....
#20
caterham2
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Posted 30 July 2014 - 11:31 PM
But anyway JAW I'm tired of you're constant interjections and empty advice, so I'm out of here. I know damn well that you're going to ignore this but I'll say it anyway: bad information is worse than no information at all; sometimes it's best to say nothing than just blurt out whatever comes into your head just for the sake of conversation.
Cheers Fellas!
Joining you at the pie shop OJ and Bomber, or if not there I may be in Tuscany according to our learned friend "J.ust A. W.anker"
#21
_Muzzy_
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Posted 31 July 2014 - 07:04 AM
Just a complete off the topic bit, Seeing as I douldnt find the pie shop. I drove a golf cart yesterday, mental it has been re powered with a 1100cc motor engine (hybsusa) crap, it had some pick up and locker diff, I think I'm getting old
#22
Dave6179
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Posted 31 July 2014 - 08:10 AM
I usually run Castrol 20/50. I tried thier 15/40 and lost oil pressure when hot. I even swapped oil pumps with a measured good one. Not sure on bearing clearances, just machined to suit ACL bearings... not my regular shop though, as they bloody closed!
#25
_oldjohnno_
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Posted 31 July 2014 - 01:43 PM
Jeeze guys, nevermind if the grumpy guru wants to do a Cartman, what do the bloody facts show?
At the end of the day, its your mill Muzzy..
.. you can fill the sump from what's left in a sardine can after you've scoffed the fish.. ..if you want to..
Penrite do run a bunch of old classics, & give them a flogging 'too, so they just might have some idea 'bout it..
& if some of you guys wanna pack a sad.. too bloody bad..
Prickly, grumpy, irritable? Yes, guilty as charged. I'll be the first to admit my patience with people is extremely limited, especially those that waste my time. My personality does tend towards crabbiness, no doubt about it. I've also suffered from depression ever since I was a child but medication has been a great help. So if you want to make jokes about missing my pills this morning go for it; it's probably true. If I seem to over-react well maybe I do. Perhaps it's just a forum and I should get over it but I really like a lot of the guys here and some of them have an enormous amount of knowledge and experience. Mick, Kevin, Warren, Caterham, Rod and Bomber just to name a few have all built and run some impressive stuff. I've been here a while too and I like to think that I've helped a few people get the results they were after. Actually I know I have - they've emailed or rung to thank me. There's nowhere else like this if you're into Holden sixes.
What irritates me about you is that while you seem quite bright you also seem to have no real experience or knowledge to bring to this place. Which is fine but you seem to need to get involved in every topic, usually just to provide some links to something vaguely related. There's never anything specific or useful and it's obvious you have very little of value to offer. Despite this you second guess everyone else, even if they do have real credibility. Now, I'm not knocking healthy scepticism, but if you're going to hint that someone who has built an 11 second 202 doesn't know what they are talking about then you'd better have a 10 second car in your shed.
Why would I be so touchy about you disputing everything I say? Am I just over-sensitive? Probably. But I like to think that any advice I offer is based on first-hand experience or at least complies with the laws of physics. What credibility do I have? I've been building and working on engines for over 30 years. In the early days I realised I had more talent as a tuner than a rider/driver, so that's what I focussed on. I did a lot of work on two-stroke bikes with good results, and in the early 80s I was writing programs for 2 stroke pipe and porting design on an XT computer. In the mid 80s I started working on car engines as well, building Holden sixes and BBC, SBC, Pontiac and Ford V8s as well as a couple of BMC engines, all with good results. I was running Keihin carbs on a Mini before 1980 and have been keen on variable venturi carbs on car engines ever since.
I was always interested in flow dynamics so later I built a primitive floating-depression flowbench. It was a real eye-opener and soon showed me that nearly everything I thought I knew about airflow was wrong. It was later refined and is something I'm still interested in and still use a lot and I'm still learning. I'm now in the process of getting my head around a couple of CFD packages and this has also been both educational and useful.
My interest in tribology stems from a test rig I built for testing motorcycle wet clutches (one of the types of bike I work with has chronic clutch problems as a result of producing nearly double its original output). I learned that high viscosity oils have a surprisingly larger amount of shear friction than lighter oils, and this is one reason why the current trend is towards lighter oils. These experiments drove me on to further study. Yes, Penrite might recommend a heavy oil but they are the Ministry for Heavy Oils. Ring some other suppliers - Brad Penn, Royal Purple, Mobil for example, they will almost certainly recommend something a lot more watery and a bit more in line with current thinking. They realize that oil pressure in itself isn't all that important. But at any rate I've spent some real time on this stuff, I haven't just read a few web pages.
At work I've spent a couple of decades working on a variety of diesel and hydraulic equipment as well as designing and building specialised machinery. But for the last few years I've worked as R&D Manager for a small company with US backing. I've led some interesting projects and have an annual budget of over $6M. I never went to Uni but I've spent half my life studying engines, and I've read all the classics : Heywood, Taylor, Irving, Blair, Ricardo, Jennings et al. I'm not telling you all this to big-note myself (I tend to keep quiet) but I wanted to show that I - like many others here - base my advice on solid experience. There are some very switched on guys here - don't be fooled by their modest demeanour. If I don't know about a subject I try not to say anything rather than risk misleading some poor bugger with bad information or the linking him to drivel from the marketing departments. God knows there's enough misinformation on forums already. There are people here who have have done more with Holden sixes than I ever have or ever will; I want to hear what they have to say, not your unfounded ramblings.
But anyhow there are smart people here, more than you realize. If you keep annoying them with your constant shit-dribbling they'll all wander off, there's no doubt about that. Sadly though, I don't think you give a shit so long as you're getting attention, good or bad. Please, just frOck off and let us return to the pleasant place this used to be. Seriously, just frOck off.
And thanks guys for your kind PMs and emails.
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