raj_kemp

Hi,

Just had oil change service at sparshots (Dealer) for £193 which included the oil price. It was dealers choice for fully synhtetic.

What do you think about shell oil?

Thanks,

Kemp

mart360

not allowed to mutch about dealers on here, ( mods ) but they cough cough cough cough get my drift


Mart

jay knowles

Thats what i use in my 04 sti,never had any problems and doesnt burn a drop.JASON

Scooby Dan

Prosport put it in my STI last time they serviced it and it seems fine

Drift SX

Are the oil too thin for turbo??

raj_kemp

Can I use any other brand oil to top up till next change (ofcourse same grade)?

Kemp

Bob Rawle

Kemp that oil will be fine in your car. I use Shell oils on and off depending on what I am doing and have had no problems with it. Sounds like a sensible dealer. Now if it had been Magnatec its another story.

cheers

bob

Tone Loc

iTrader: (1)

Whats wrong with Magnatec Bob? I have a PPP car (classic) serviced by Stan Palmers from new and it has used Magnatec all it's life (over 100k). Now it's mine it will be serviced at Prosport but just woundering what the problem with the Castrol is?

Tony.

jameswrx

iTrader: (4)

i was really tempted to use this in my 97 Type R, but nearly all the threads on here say 15/50 mobil.. so thats what I used.

I don't get this poxt oil debate though. I mean if the 1st no. is the cold thickness and the 2nd no. is hot thickness then surely it's better to have a lower cold number?

I swear that 15/50 feels too thick this time of year. I drained my scoob the other week and the oil that came out seemed soo thick. I can't help thinking 5/40 helix ultra will be better.. at least until summer anyway.

GaryCat

My dealer (SGT in Taplow) always uses Magnatec... what is the problem with it?

Bob Rawle

Carburisation in a word, oil breaks down into "hard" particles, big ends and mains are not fond !! Won't stand the turbo temps in a modified car.

I repeatedly wax on about this so plenty of threads around relating.

bob

ALi-B

iTrader: (1)

Ooh, Carburisation

"Carburisation: - By heating a ferrous material in a carbon rich atmosphere such as carbon dioxide or methane, the carbon potential can be sufficient to cause adsorption of carbon at the surface of the material, making the surface harder."

Hang on...oil isn't ferrous...is it??

Hmmm, lost in translation perhaps

bobthebodger

£193 .....am i missing something here!

robsw

No but many parts of the engine are!!!!

So surely by your statement, the standard of oil is very important, especially in an engine that runs hot, as heat always speeds processes up (heat makes molecules move faster)!

robsw

If you take a used engine apart you will find carbon deposits on the internal combustion chamber materials, ie the surface of the piston & combustion recess in the heads (valve surface etc).

It is the same as what happens within the turbo, as the turbo is reaching similar temps to the comb. chamber, if you don't allow the turbo to cool properly (carbonisation in the turbo causes the seals to wear - oil leeks in to the induction, ic, etc). Hence the need for a turbo timer!

So a decent oil designed for turbo charged engine is required, the performance of which should meet the requirements of the user (steady daily drive through to racing car use).

911

Have used Shell Helix/Gemini oil in my hill climb 911 and now my 407 bhp hill climb Sti V3.
Always changed the oil every Xmas after a full 3000 road miles and 12 hill climb meetings in any year.
All seems well. Had the 911 since 1988 and the Sti since 2002.

Doing it all again this month.

Might see it different if the Sti was a track day warrior though, as a full-on hill climb only lasts for 60 seconds, as opposed to a lap of Donnington time and time again.

Graham.

ALi-B

iTrader: (1)

Just the crank would be the only critical ferrous component. And I'd guess the harder it is; the better.

Or maybe it's bits of metal particals that has worn off the crank/other ferrous components and carburises in the sump away from moving parts. Subarus have a full flow filter, right?

Might see where I'm getting at there

Anyway, from what I have found Magnatec is no different to any other semi-synthetic out there. Indeed, in excessively harsh conditions even branded fully synthetics suffer the same (albeit to a lesser extent - comparatively)

They all seem to suffer from similar sludge, varnish, carbon and ash deposits. Depending on the engines useage conditions and oil change schedule. (i.e hard/short duration use + normal oil change schedules = more deposits than light use + more frequent than normal oil change schedules ). Although I've not had benefit of being to fully judge on ester based synthetics.

wrxmania

My dealer uses Shell Helix Ultra 5W/40 and I am sure Oilman recommends this oil grade (not the Shell Helix necessarily) for a non heavily tuned turbo car at various points.

But the price - WOW

Bob Rawle

In simple terms it gets BURNT !! That simple enough.

You can take the p1ss as much as you like doesn't alter the issue's.

Bob

ALi-B

iTrader: (1)

Sorry Bob

Subcat001

Interestingly enough Vauxhalls own oil is Shell Helix. So if you happen to have trade club card it can be picked up rather cheap.

Tone Loc

iTrader: (1)

Thanks Bob. I'll have a dig about and search but i've probably always ignored posts about Magnatec having in the previous car normally used Motul or Castrol RS, so it just wasn't relevant. Only sparked my interest when i noticed Stan Palmers have used the stuff in the current car for the past 6 years .

Tony.

JohnD

iTrader: (5)

In a word - yes!
The process you describe is "carburising" - where carbon is absorbed into the surface of a ferrous metal (usually steel) then heat treated to CASE HARDEN the steel. Carburisation is (in this context) the overheating of the oil to the point where certain constituents form solid particals and can therefore be abrasive. (look in the corner of the old roasting dish to give a clue - yuk!)
I am not about to enter discussion re- Magnatec but I found the context of Bobs comments perfectly clear!
JohnD