Most suitable/Best oil?

[Teutonic_Tamer]

After doing a bit of research, I found this post particularly useful :

http://www.golfgtiforum.co.uk/index.php?topic=65779.0


I've decided to continue running the Castrol SLX Powerflow Longlife III SAE 5W-30 50400/5070 oil but have now changed from Longlife service interval to fixed Distance&Time @ every 15,000 KMs.

Glad my nuggets of info are getting noticed!

Very interesting read TT, can I ask a simple question which I have never been able to find the answer too?  Using VCDS I looked at the servicing and oil quality reading from my car which from memory was "2" but no where can I find on what scale, is it 1-10 or 1-5 and if so does it start at 0 when refreshed or new, and if so do you have a recommendation, or advice on at what value a refresh should be considered (outside of your existing recomendations)???? 

I don't know what the actual readings mean.  However, if the car is coded for Time and Distance, these readings from the oil quality sensor are ignored.

[Richn83]

Cheers TT, if you dont know its probably not worth knowing 

[Mako V12V]

I've just had my Ed30's 2nd service carried out at a local VW MD. The first service oil used was Helix 5W30 (previous owner and different VWMD) and now my local has done the second service using Helix 10W 40.

I asked them about this and they said the 10W40 is better quality oil....is this true?

Can 5W30 and 10W40 be mixed as i still have nearly 1L of 5W30 left as top-up oil?

Car is exactly 2 years old with near 17k on the clock.

Cheers - Phil

[Teutonic_Tamer]

I've just had my Ed30's 2nd service carried out at a local VW MD. The first service oil used was Helix 5W30 (previous owner and different VWMD) and now my local has done the second service using Helix 10W 40.

I asked them about this and they said the 10W40 is better quality oil....is this true?

Nope.  The 10w40 is most likey a semi-synthetic - so how can that be better than a fully synthetic (from the same oil company).  In a turbo engine - you categorically do NOT want semi-synth - you will coke up your turbo bearings.

This is just another example of main stealers being incompetent.  ETKA categorically does NOT authorise anything other than LongLife 3 oil to be used in the GTI, even if it is on T&D servicing - so go back to the stealer and demand they change it for the correct oil.

Can 5W30 and 10W40 be mixed as i still have nearly 1L of 5W30 left as top-up oil?

Yes, they can both be mixed (though ideally no more than half a litre).

[mvb12]

sorry to bring this old thread up again - best is castrol A3 10W-40 a good all to go in the GTI.

is this a semi or full engine oil?

[s2martyn]

does no-one use the longlife 3 from tps??
been using this in all vag cars for years..
very well priced approx £25 a gallon

[fsgti]

Anything with VW 504.00 or 507.00 on the label.  This is the spec for all VW engines now.

I personally use Fuchs oil as its the OE oil from the factory and its reasonably priced.

It say 504 00, 502 00 in owners manual for non longlife service vehicles

[pudding]

Is quoting someone from 13 years ago really necessary?