which engine oil would you recommend?
11 April 2009, 10:39 PM
#152
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Just to redress the balance after my previous very non technical input, if you were concerned that oil additives may have a detrimental effect on flow, it's ok.
The flow of single and multi-grade lubricants between eccentric cylinders was studied experimentally to assess the effect of polymer additives. Azimuthal velocity profiles were measured in steady flow using laser Doppler velocimetry. The addition of polymer significantly decreases the size of a counter-rotating eddy that forms adjacent to the stationary wall in the large gap region. Film thickness in a dynamically loaded journal bearing was also measured using eddy current probes. Viscoelasticity associated with polymer additives did not influence minimum film thickness or attitude angle under loading conditions characteristic of an engine cycle. Results in both steady and unsteady flows are at least quanlitatively consistent with predictions of the upper convected Maxwell model.
Just as well really
The flow of single and multi-grade lubricants between eccentric cylinders was studied experimentally to assess the effect of polymer additives. Azimuthal velocity profiles were measured in steady flow using laser Doppler velocimetry. The addition of polymer significantly decreases the size of a counter-rotating eddy that forms adjacent to the stationary wall in the large gap region. Film thickness in a dynamically loaded journal bearing was also measured using eddy current probes. Viscoelasticity associated with polymer additives did not influence minimum film thickness or attitude angle under loading conditions characteristic of an engine cycle. Results in both steady and unsteady flows are at least quanlitatively consistent with predictions of the upper convected Maxwell model.
Just as well really
Christ, all I want to know is what oil is recommended for my 2001 WRX.
And now for something completely different.....
YouTube - Ministry of Silly Walks
11 April 2009, 10:58 PM
#153
Christ, all I want to know is what oil is recommended for my 2001 WRX.
And now for something completely different.....
YouTube - Ministry of Silly Walks
Forgot how good that sketch was
Cheers
Simon
12 April 2009, 10:33 AM
#155
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FFS! LOL, i aint seen one of these threads for ages 
I love it. Stick some 15w 50 in it and be done with it. If RCM say so, then thats good enough for me! Hahaha.
Of course that is my car and i drive like the almost 40 years old i am!
Although, i do seem to have developed a heavy right foot this past fortnight
I love it. Stick some 15w 50 in it and be done with it. If RCM say so, then thats good enough for me! Hahaha.
Of course that is my car and i drive like the almost 40 years old i am!
Although, i do seem to have developed a heavy right foot this past fortnight
12 April 2009, 10:47 AM
#157
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Not heavily modded, but if you check 'My Garage' it is modified to some extent.
That lists all my mods oilman. I have never had anyone service my car that has used anything less than 10w 50. BUT, it has always been modded from an early age.
And another BUT, when it was a standard car it did just get the Shell Helix oil in it
(Oh, and thanks for the Easter price offer! I got some more in the garage now)
That lists all my mods oilman. I have never had anyone service my car that has used anything less than 10w 50. BUT, it has always been modded from an early age.
And another BUT, when it was a standard car it did just get the Shell Helix oil in it
(Oh, and thanks for the Easter price offer! I got some more in the garage now)
Last edited by MaDaSS; 12 April 2009 at 10:50 AM.
12 April 2009, 05:38 PM
#158
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Ah bollocks. Im going to stick with what I have used the last 5 years, Halfords semi synthetic 10W 40 for 19.99. Never had any issues with my previous car 306gti-6 which never missed a beat.
14 April 2009, 11:39 AM
#162
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Mine's been filled with Miller's 10w-60 CFS.....
50% increase in bhp, and some track use, after Mobil 1 the hot idle pressure is nearly double, never seen over 98 degrees oil temp.
Maybe 10w-40 next time ?
dunx
50% increase in bhp, and some track use, after Mobil 1 the hot idle pressure is nearly double, never seen over 98 degrees oil temp.
Maybe 10w-40 next time ?
dunx
15 April 2009, 03:37 PM
#165
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Car Bibles : The Engine Oil Bible
I was going to get 0w-30 ( no good in my 96 sti import ) until i read the above , it gets quite technical , but i realised 10w-40 would be the way to go.
.....longest post ive seen so far on here.........
I was going to get 0w-30 ( no good in my 96 sti import ) until i read the above , it gets quite technical , but i realised 10w-40 would be the way to go.
.....longest post ive seen so far on here.........
22 April 2010, 04:38 PM
#173
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Been running 20w 50 valvoline VR for running in a new forged build.Few mods 340bhp. whats the recommendation now its run in? Ive got a brand new case of 0w 40 castrol edge fully synthetic in the garage. Is that any good to me?? HHHHEEEELLLLPPP!!!!
30 July 2010, 09:30 PM
#175
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I have a standard STI Type R V4, and just had a rebuild. What oil must i use?
On subaruclub.nl they recomended 5w50 for all subaru's. But here a read other things. So now im confused
On subaruclub.nl they recomended 5w50 for all subaru's. But here a read other things. So now im confused
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