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Topic: Engine oil for Cosworth? (Read 5501 times) |
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bonnietiler
Full Member
Sense of humour .... Essential!
Posts: 215
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Re: Engine oil for Cosworth?
« Reply #21 on: Nov 25th, 2010, 10:30pm » |
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Ooops..my mistake..you are quite right it is a 5w/30 FULL synthetic oil..
My apologies
Regards
Bonnietiler
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Engine oil for Cosworth?
« Reply #22 on: Nov 28th, 2010, 4:41am » |
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on Nov 25th, 2010, 8:37am, bonnietiler wrote:Now sorry to disagree here Johnny
Believe me if a molecule of synth can get through so can a molecule of dino |
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Not so......Dino (mineral) oil is made up of many different molecules that vary in size & weight (even when mixed with 30% synthetic) ...so there is no uniformity to them.
Synthetic oil is made up of small molecules that are all the same size & weight.
Unless you've just rebuild your engine, then you have no idea of the condition of the engine seals. So changing from semi-synthetic to fully-synthetic may cause a leak/more of a leak, simply because the smaller molecular makeup of fully synthetic oil is able to get through any microscopic breaches in the seals that a majority of semi synthetic molecules couldn't possibly fit through 
I'd still recommend fully synthetic though 
For the full benefits of re-filling with fully synthetic, use a good engine flush when draining the old semi/dino oil out to get rid of any sludge 
P.S...bonnietiler....there is no 'h' in Jonny
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bonnietiler
Full Member
Sense of humour .... Essential!
Posts: 215
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Re: Engine oil for Cosworth?
« Reply #23 on: Nov 28th, 2010, 8:45am » |
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Ok Jonny..spelt correctly, I stand corrected 
What ever you say..Mr cab
If it makes you happy to believe that a £2.00 rubber seal....with a spring!..can retain oil at a molecular level then be my guest.
Hang on though....just a minute...YOU ARE RIGHT, i've been a fool of the highest order...you've only solved...
just a moment Jonny (got it right again...only need telling once)...are we alone..shhh...?
whisper....
You've only solved the biggest mystery of last year that's all..
We should keep it to our selves..we'll make a fortune..MONEY BEYOND OUR WILDES...ahem..shhh
Remember that BP oil spill in the Gulf? Well (clever that)..well, clearly this was as a result of BP discovering the only known naturally occuring deposit of...trumpet fanfare..synthetic oil....
BP hadn't realised the potential problem, they had their standard Rubber (with spring facing the oil) molecular containment seal in place...but the synthetic...crept along the shaft...then...cunning swine...disassembled itself into its constituent molecular strands and swept past the defences of the rubber (with spring) molecular containment seal...after this with the doughty oil men in full retreat despite phaser fire and use of thorian containment fields, it caused a cascade effect in the dilithium chamber, de-stabilising the anti-matter structural integrity field, this in turn had a distortion effect on the berrilium sphere, well we all know what a distorted sphere feels like....naturally the containment field collapsed the bi-transpolate di-sulphide leeched through and melted the warp drive storage silos, and as we all know you can't operate on impulse drive forever...causing a cascade reaction the tri-spitulate sphere bolts dematerialised (they are holographic after all) and the resulting explosion left the platform a vitual bomb site.
d**ned sneaky Synthetic I spit on your ability to deconstruct yourself back into your base molecular strands...Oh the humanity...The blade was not dull and it went deep and was twisted so
Nurse...NURSE...The Screens!...he's having one of his turns again...
gibber...gibber..synth..small molecules...self deconstruction..it's got a mind of its own..it'll take over the whole world I tell you...blub...sigh..THUMP!
"Don't worry Sister I got him the old lump Thor 2 pound leather sedative again"..."He'll be OK when the swelling goes down"
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Engine oil for Cosworth?
« Reply #25 on: Nov 29th, 2010, 12:14am » |
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Bonnietiler, am I detecting a hint of sarcasm ?  ....It's a heartache, nothing but a heartache I tells ya
......Beam me up Scotty
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: Engine oil for Cosworth?
« Reply #26 on: Nov 29th, 2010, 8:35am » |
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very good JC ie jo nny
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bonnietiler
Full Member
Sense of humour .... Essential!
Posts: 215
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Re: Engine oil for Cosworth?
« Reply #27 on: Nov 29th, 2010, 9:07am » |
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Only meant as a bit of fun, hope nobody took offence as none intended
Bonnietiler...and incidentally..I have actually been "Lost in France" before now
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Engine oil for Cosworth?
« Reply #28 on: Nov 29th, 2010, 4:33pm » |
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on Nov 29th, 2010, 9:07am, bonnietiler wrote:| Only meant as a bit of fun, hope nobody took offence as none intended |
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Me too .....no hard feelings
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Engine oil for Cosworth?
« Reply #29 on: Dec 1st, 2010, 2:46pm » |
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Assuming the thread posted by Tenfut is correct it would seem fully synthetic oil is thinner when cold – the technicalities don’t really matter. Chances are most of our cars even Jonnycab’s working car spend most of their time cold so maybe a bit more (thin) oil seeps out of the timing cover or whatever overnight – it only takes a couple of extra drips a night to leave a noticeably bigger patch on the drive or a more oily engine.
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ABS multiplug wheel sensor pins MK IV or MK 20
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