which engine oil would you recommend?
06 February 2008 | 01:47 PM
#151
11 April 2009 | 11:39 PM
#152
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Joined: Dec 2008
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From: Eastleigh
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 | 11:58 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 | 07:55 AM
#154
FOUND THIS A WILE BACK>
Google Image Result for http://img.photobucket.com/albums/v155/soggy_phoenix/cranksensor1.jpg
Google Image Result for http://img.photobucket.com/albums/v155/soggy_phoenix/cranksensor1.jpg
12 April 2009 | 11:33 AM
#155
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Joined: Aug 2004
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From: Nottingham
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 | 11:44 AM
#156
Why would you put 15w-50 in it if it's a standard road car? The handbook says 5w-30 or 5w-40, 10w-40 I believe? Heavily modded sure 10w-50 or 15w-50 but otherwise.....
Cheers
Simon
Cheers
Simon
12 April 2009 | 11:47 AM
#157
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Joined: Aug 2004
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From: Nottingham
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 11:50 AM.
13 April 2009 | 01:27 AM
#160
Your car is pretty tweaked, and it's on the verge of wanting a 10w-50, but that's then down to what you do with the car. If it's tracked, go for a 10w-50, for normal use a good fully synthetic oil will be fine
14 April 2009 | 12:39 PM
#162
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From: Slowly rebuilding the kit of bits into a car...
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
14 April 2009 | 05:05 PM
#164
A 60 is a bit thick at 100degC, in fact around 24cst when the required is 14cst so about 70% too thick.
A 40 would be better
Cheers
15 April 2009 | 04:37 PM
#165
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Joined: Mar 2007
Posts: 69
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From: Cheltenham
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.........
12 March 2010 | 05:12 PM
#169
Si2000, you have a pm, but the oils you've mentioned are fine, perhaps Pro S 10w-50 or Millers CFS 10w-50 would give better cold start protection, but no need to worry about it too much
22 April 2010 | 05:38 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 | 10:30 PM
#175
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
31 July 2010 | 02:30 PM
#176
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