5W/30 oil in a Leon Cupra ?

ChrisGTL

'Awesome' LCR225
Nov 17, 2007
2,459
2
Huddersfield
and with the piston rings ''sticking'' .... sticking to what exactly?

Sticking closed/sticking to the groove.

The rings are supposed to turn as the piston goes up and down (move freely), once the rings are gummed up they cant move anymore......resulting in sticking closed.
 

ChrisGTL

'Awesome' LCR225
Nov 17, 2007
2,459
2
Huddersfield
So you're saying that my oil (10W40) is (possibly) too thick, and the car is using too much ?, then putting 5W/30 in would surely be thicker, wouldn't it ??

Regards,
Andy

5/30 is thinner than a 10/40.

A 5w/30 can have a viscosity between 9.3 & 12.5 cSt.

A 10w/40 can have a viscosity between 12.5 & 16.3 cSt.

The difference between 9.3 and 16.3 cSt is quite alot. But if the rings are gummed up then using a lighter oil (5/30) will result in even more oil consumption because more of the oil can fit between the ring and cylinder wall.

Clean the inside of your exhaust tip out, get it as clean as possible and drive it to work or whatever, put ur finger up your exhaust tip and see how black it is (dont burn it though!).

I got the impression that the 1.8T engine doesnt consume much oil, and yours is so that would be my guess. However i'm no mechanic, I just listen to what mechanics/engineers who send us used engine oil samples have to say about various problems.
 

andy15star

Full Member
Apr 17, 2005
825
0
Durham
Cheers, i'll go for the Magnatec 5W30, maybe the EDGE if not too expensive. I've just put the last litre of my original 10W40 in, so i need to wait a few weeks before i put the 5W30 in. Cheers all !

Best Regards,
Andy
 

godber225r

T15 PJG
Sep 6, 2008
893
0
Whiteley, Hampshire
As i said use the 5W/30 definatley, but i would go for the Castrol edge 5W/30 as it says on the side of the bottle that its made for modern vw and audi engines. i am going to try this next oil change aswell. changing from 5W/30 magnatec
 

Willie

LCR Track car
Aug 6, 2004
8,939
1
Sunny Scotland
As i said use the 5W/30 definatley, but i would go for the Castrol edge 5W/30 as it says on the side of the bottle that its made for modern vw and audi engines. i am going to try this next oil change aswell. changing from 5W/30 magnatec
Seriously????

I can't believe you guy's are going with their what you think, what a garage tells you or whats written on the side of a bottle over someone who deals with and studies oils for a living.

Your nuts!!
 

andy15star

Full Member
Apr 17, 2005
825
0
Durham
True, i know Chris knows his stuff, but having used Magnatec for 5 years without any bother whatsoever, plus SEAT using it, plus my dad using it in his LCR, speaks volumes too....surely ?

Regards,
Andy
 

Willie

LCR Track car
Aug 6, 2004
8,939
1
Sunny Scotland
True, i know Chris knows his stuff, but having used Magnatec for 5 years without any bother whatsoever, plus SEAT using it, plus my dad using it in his LCR, speaks volumes too....surely ?

Regards,
Andy
As long as your happy thats all that matters
I'm keeping my car and engine till its all totally feck, I'm looking after my engine as well as possible.
I'm taking Chris's advise and have been using Miller's for 5 years with no engine problems.
I've been servicing every 6,000 miles this past while as well.
I'll expect 150,000 miles out of my engine and there's no reason why I shouldn't

I wouldn't like to buy you or your dad's engine's when your finished with them
 

ChrisGTL

'Awesome' LCR225
Nov 17, 2007
2,459
2
Huddersfield
I'd love to know the difference between 'Edge' and 'Magnatec'

Is it a marketing jobby or are the blends completely different...?

Oh and the reason I said Mobil 1 oils are the best is because they use 'designer' base oils, they split the chemistry down and rebuild it to give a perfect base of the final blend.

Because Mobil 1 is part of Exxon, and Exxon are the best in refined products they can afford to do this, unfortunately its just not cost effective for any other oil companies to do so. They would have to pass the extra cost on to the end user. The difference between a good base oil and a 'designer' base oil on paper is massive, but in real terms the difference isn't that big.
 

ChrisGTL

'Awesome' LCR225
Nov 17, 2007
2,459
2
Huddersfield
  • GTX Magnatec

Applications

Castrol GTX Magnatec 5W-30 A1 has been synthetically engineered to provide enhanced protection for modern vehicles and has now been radically improved.

Every time you start your car it takes a while for your engine to get fully effective protection from an ordinary oil, because the oil cannot protect properly until it reaches a critical temperature - as a result independent tests show up to 75% of engine wear occurs in the first ten minutes.

New improved Castrol GTX Magnatec 5W-30 A1 is different because it gets to work straight away by virtue of a unique synthetic ester that clings to engine surfaces like a magnet - this "Unique Molecular Attraction".

Castrol GTX Magnatec 5W-30 A1 has wide application in modern petrol and diesel passenger cars and has been specifically designed to optimise fuel economy. It is particularly suited to Ford vehicles where a 5W-30 A1/B1 oil is specified.

Features / Benefits

Castrol GTX Magnatec 5W-30 A1 offers 4 times better wear protection than ordinary oils.

Up to 60% better than the competitor grades we compared Castrol GTX Magnatec against.

Unique triple layer formula with active molecules clinging to engine parts.


  • Edge

Applications

Castrol have developed EDGE 5W-30 in co-operation with the VW Group. This oil sets new standards in the industry in regards to cleanliness of the engine, thereby reducing harmful emissions and subsequent damage to the environment.

The technology in this oil also reduces long term blocking thereby prolonging the life of the diesel particulate filter. Castrol EDGE 5W-30 is equally suitable for gasoline and diesel vehicles where performance specifications VW 504 00 and 507 00 are demanded. Plus Castrol has managed to meet the requirements of most previous VW oil specifications making it suitable for new and older engines.

In addition to its cleaning properties, EDGE 5W-30 antiwear technology provides strong protection for modern FSI, TDI and turbocharged engines.

Features / Benefits

Passes the toughest VW motor oil tests to protect all parts of your engine.

For modern VW diesel & gasoline engines.

Provides the latest emision system protection.

Fights valve deposits with unique FSI valve protection.

Fully synthetic technology.
 

Nautilus

Active Member
Dec 9, 2006
547
2
Bucharest, Romania
The user manual for my 2005 Leon FR recommended VW 503.00 oil, 0W30 viscosity. As the car has been chipped and modded, after some digging around on the forums I've found out that VW 503.01 oils have superior properties when running hot and hard in motorsport conditions. I've tried the Castrol SLX Longlife II at first (0W30, 503.00) but changed it at regular time, then Castrol EDGE 0W40 (VW 503.01).

For some reason, 1.8T engines for the USA have a different specification, for example 5W30 oil instead of 0W30 and 5W40 instead of 0W40

~Nautilus
 

ChrisGTL

'Awesome' LCR225
Nov 17, 2007
2,459
2
Huddersfield
For some reason, 1.8T engines for the USA have a different specification, for example 5W30 oil instead of 0W30 and 5W40 instead of 0W40

~Nautilus

Oils in USA have to work over a much wider range of temperatures, depending where abouts in USA you are.

Something with a good detergent pack to clean up the dirty rubbish fuel they have in the USA ;)

USA are roughly 20 years behind the UK in terms of fuel quality. I was amazed when a fuel expert told me this.
 

andy15star

Full Member
Apr 17, 2005
825
0
Durham
Cheers all !. I think i'll go full hog and look for the Mobil1 or Castrol Edge 5W30 for my Leon Cupra then. There aren't many places to get oil round here so,

1) Does anyone know if Halfords sell Mobil1 or Edge ?

2) Is it a great deal more expensive than the Magnatec, i don't mind paying a few quid more per 2 litres, but cannot really justify paying double (considering my car uses quite a bit of oil, and i do about 1000k a month).

Regards,
Andy
 

vwbassett

Joined the Dark Side
Aug 13, 2007
963
53
Surrey
Halfords sell both Edge and mobile 1 ESP, 4L are bout £45 1L is about £15 quite expensive but it seems the going rate.
 

SPIROS

Guest
Ive gone for Comma 5w/30 long life stuff esp designed for Vag engines,

Dad has a 225 S3 & it runs sweet as on it, so my LCR will be having its oil change with that tomorrow night :)
 

andy15star

Full Member
Apr 17, 2005
825
0
Durham
Halfords sell both Edge and mobile 1 ESP, 4L are bout £45 1L is about £15 quite expensive but it seems the going rate.

Cheers, so...me being a relatively thicko when it comes to oil (always bought the same one!), i'm assuming there are no variations of Mobil1 5W/30 (or Edge 5W/30 for that matter) ?. In other words i simply go in and buy the can which says "Mobil1 5W30" (or Castrol Edge 5W/30) and i'd be getting the right one ? (Sorry...i try not to appear thick....but it's difficult to hide!)

Best Regards,
Andy
 
Last edited:

smithygcupra

Cymru am Byth
May 25, 2008
271
0
Newport
Seriously????

I can't believe you guy's are going with their what you think, what a garage tells you or whats written on the side of a bottle over someone who deals with and studies oils for a living.

Your nuts!!

uhmm....i dont know chris or his experience or knowledge of oil.... but dont you think that the people who work at castrol etc deal and study oil for a living too??... i think this thread has gone a bit too far now to be honest... i think that as long as you buy the correct grade oil whether its castrol, miller, or stuff from the dealer.... you should be fine.... your only gona get problems if you buy cheap s**t and/or of the wrong grade
 

andy15star

Full Member
Apr 17, 2005
825
0
Durham
Aye, i think as long as i get 10W40 or 5W30 (preferable), and a well branded make then it should all be okay. Like i've said, i've used Magnatec for years with no bad effects on the engine, so that should be fine. But i still think i'm gonna try the EDGE or Mobil1, just to see at least if there's any increase in mpg.

Cheers,
Andy
 
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