MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: gazza222 on January 30, 2018, 05:16:31 pm

Title: Which oil ?
Post by: gazza222 on January 30, 2018, 05:16:31 pm
Hi, having spent years with diesel t5 buses, could anyone recommend a half decent oil for my 2007 gti running about 250-260 ish bhp, 45,000 on the clock
Thanks  :happy2:
Title: Re: Which oil ?
Post by: andyiseddy02 on February 06, 2018, 07:37:44 pm
I switched to Millers 5w40 just because the car has done a few miles.
The garage rated it so I jumped.

Not many places stock it and it does need half a litre every couple of thousand miles but it is not a big issue to go and get some.
Title: Re: Which oil ?
Post by: colesey on February 06, 2018, 08:08:06 pm
You’re better off using 5/40 on a remapped car and either Millers NT or Mobil 1 would be good premium choices.
Title: Re: Which oil ?
Post by: lukemk5gti on February 07, 2018, 08:17:16 am
As states

Millers nanodrive 5W-40

Either stock or standard it's ideal

Get from opie oils. If you sign up to their newsletter just wait for one of the 15% off sales and stock up.
Title: Re: Which oil ?
Post by: pudding on February 07, 2018, 09:45:42 am
Frequency of change is more important than oil brand.   Millers is silly money for what it is and a prime example of marketing overhyping a very small benefit -  mainly on older high friction flat tappet engines - which the TFSI is not  :smiley:

Title: Re: Which oil ?
Post by: lukemk5gti on February 08, 2018, 08:04:41 am
Frequency of change is more important than oil brand.   Millers is silly money for what it is and a prime example of marketing overhyping a very small benefit -  mainly on older high friction flat tappet engines - which the TFSI is not  :smiley:

A valid point but just one to note is that I switches to Millers 5W-40 2 services ago and noticed that I haven't needed to top up the engine with any oil at all really between services.

Don't know if it has a slightly lower water content or less volatile content but either way I'm happy with that as a result.
Title: Re: Which oil ?
Post by: Dan_FR on February 08, 2018, 08:37:03 am
What oil did you come from Luke, a 5W30?
Title: Re: Which oil ?
Post by: lukemk5gti on February 08, 2018, 09:45:05 am
What oil did you come from Luke, a 5W30?

I did come from 5W-30 typically castrol edge or Quantum

Moved to 5W-40

The additional 10 on high temp viscosity wouldn't affect burn off though would it?
Title: Re: Which oil ?
Post by: fazi123 on February 08, 2018, 09:59:29 am
What oil did you come from Luke, a 5W30?

I did come from 5W-30 typically castrol edge or Quantum

Moved to 5W-40

The additional 10 on high temp viscosity wouldn't affect burn off though would it?

I think you'd find it definitely would affect burn off. I moved from Mobil 1 5w30 to the recommended Millers nano drive 5w40. After my trip to R-tech they said I could either continue using Millers 5w40 or switch to Quantum 5w40 (Official VW oil). My car was burning literally no oil once I'd made the switch to the 5w40 oil and there was no noticeable difference between the Millers & the Quantum....Except for in my wallet ;)

HTH,
Faz
Title: Re: Which oil ?
Post by: Dan_FR on February 08, 2018, 10:12:00 am
Its the extra weight of the oil that is helping, plus the Millers is on the thicker end of 40w oils anyway
Title: Re: Which oil ?
Post by: pudding on February 08, 2018, 11:07:34 am
I experienced the same in my ED30.  Switching from the 0W30 dealer Shell oil to 0W40 Mobil 1 reduced the consumption right down.

It's worth looking at the spec sheets on Opie oils.  Look at the viscosity cst number at 100 degrees.  As Dan said, some 40s are thicker than others at 100 deg.

I like to look at the 0 degree csts as well, for rapid circulation on startup.   This is where Mobil1 excels.   Not relevant to our country, but there are plenty of videos on YouTube doing oil pour tests when frozen to -40C.  Most of them are like toffee at that temp, but the Mobil still pours out just fine.   I haven't seen a Millers pour test yet though......but dry running HPFP tappets from cold doesn't do it's life span any good.   Probably why VW put that black coating on it.







Title: Re: Which oil ?
Post by: colesey on February 08, 2018, 12:41:15 pm
Do you notice any extra engine noise from cold with the Mobil Kev?
Title: Re: Which oil ?
Post by: pudding on February 08, 2018, 03:52:29 pm
Difficult to tell when you have 3 uprated engine mounts  :grin:

Nothing out of the ordinary.  With the 5 or 0W30 Shell Helix, I used to get a second or two of 'clack clack clack' from stone cold over winter, which is one of the hydraulic lifters slow to fill up.   0W40 Mobil got rid of that completely. 

Another completely unscientific thing I do is smell the oil and rub some between my fingers.   It's a bit of an 80s legacy thing I can't let go of.   If the oil smells saturated with fuel/carbon blow-by and has lost it's lubricity, time to get it out of the engine, regardless of miles/time!   It's also a good sign of a failed HPFP seal if it reeks of petrol.
Title: Re: Which oil ?
Post by: colesey on February 08, 2018, 06:20:57 pm
Mobil 1 really is an excellent oil. About 25 years ago, I bought a used mk1 gti which had run that oil all of its 80k miles life and everything was golden under the rocker cover.  The following year, I replaced it with a similar mileage mk2 and that car was horribly sludgy from cheap oil. Oil technology has undoubtably come on a long way since then, however I’m pretty hooked on on using premium oils and mine gets fresh Millers NT every 3000 miles.
Title: Re: Which oil ?
Post by: pudding on February 09, 2018, 10:01:11 am
That is defo a sign of TLC!  In those days Mobil 1 was silly money, as were synthetics from Agip, Shell & Motul.  Proper top shelf stuff when you're a hard up teenager finding your way in the car world.   I remember a gallon of Castrol GTX being about £20 back then, and Mobil 1 was £50....for 4 litres!  I'm glad they stopped with the stupid US gallon sizing over here.

I had a beater of an old MK1 Jetta 1.5 CL in 1990.  It used to drink GTX for fun, so I tried a bottle of Mobil 1 15W50 Motorsport, which was a LOT of money.....back when a gallon of 5 star petrol was £1.89.   I bet no one on here remembers 2 - 5 star leaded fuel?!  :grin:  The Mobil oil completely stopped the oil consumption. I've been hooked on it ever since  :smiley:

There are plenty of other good oils around now though, it's a proper buyers market these days  :happy2:
Title: Re: Which oil ?
Post by: Shoduchi on February 09, 2018, 11:15:49 am
I'm trying Motul 300V next. I've been using Miller's Oils CFS NT 5w40.
Title: Re: Which oil ?
Post by: colesey on February 09, 2018, 03:39:38 pm
@Shoduchi (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=10590), am I correct in thinking you live in the Lisbon area with idyllic weather (and seafood and wine....)? If so, you will likely have different needs to those of us in the permafrost northern european areas
Title: Re: Which oil ?
Post by: pudding on February 09, 2018, 04:17:36 pm
300V Chrono is serious next level stuff......but....... 1) it's about £60 for 4 litres, and 2) they don't do it in 5W40.

I would take Fuchs TitanRace Pro S over that personally.  It's far better value for money and viscosities more suitable for the TFSI engine.  Opie Oils rate it very highly indeed.

Ester oil is great for turbo engines.  I ran the Pro S on a fresh VR6 Turbo build exclusively for 60K miles, and there was ZERO wear when I tore it down for some head work. Not even the slightest hint of a wear ridge in any of the cylinder walls.  I was running that for a while in my Ed30 and it's lovely, but the prices started going up, so I switched to Mobil1.


Title: Re: Which oil ?
Post by: Shoduchi on February 09, 2018, 04:48:42 pm
My friend can get a good discount for the Motul 300V 5w40. It's cheaper than what I pay here for the Miller's Oils.

I'm referring to the Motul 300V Power 5W40:
https://www.motul.com/us/en-US/products/300v-power-5w40--2 (https://www.motul.com/us/en-US/products/300v-power-5w40--2)
https://www.opieoils.co.uk/p-868-motul-300v-power-5w-40-ester-synthetic-racing-car-engine-oil.aspx (https://www.opieoils.co.uk/p-868-motul-300v-power-5w-40-ester-synthetic-racing-car-engine-oil.aspx)

The Chrono is too hardcore for my use. :signLOL:

PS: Yeah, here in Lisbon when its cold the temperatures drop to about 5ºC. It's near the sea. :smiley: Just the colder areas in the countryside can reach -10ºC.
Title: Re: Which oil ?
Post by: pudding on February 09, 2018, 07:43:49 pm
Ah OK, regular 300V. That is still a great oil  :happy2:  I really like Redline as well, but that is expensive stuff!



Title: Re: Which oil ?
Post by: Shoduchi on February 09, 2018, 08:30:12 pm
Ah OK, regular 300V. That is still a great oil  :happy2:  I really like Redline as well, but that is expensive stuff!

The Motul 300V 5w40 is more expensive than the equivalent Red Line 5w40. They're all expensive oils.  :laugh:

Even the Motul 300V  Chrono 10w40 is cheaper than the Power 5w40. :doh: But I can get it much cheaper than the regular price, though. My friend buys lots of litres of Motul oil so he gets good discounts.
Title: Re: Which oil ?
Post by: teo_parvu on February 10, 2018, 09:42:18 am
What do you guys know/think about 300V Chrono 10w-40 and 300V Competition 15W-50? I've won some and I'm wondering if I can use it or not. I'm thinking on using them 80% on track in the summer.
Title: Re: Which oil ?
Post by: Shoduchi on February 10, 2018, 12:47:07 pm
What do you guys know/think about 300V Chrono 10w-40 and 300V Competition 15W-50? I've won some and I'm wondering if I can use it or not. I'm thinking on using them 80% on track in the summer.

I think you can use both. @Tfsi_Mike (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=293) is now using Miller's Oils CFS 10w50 NT+.  :smiley:

http://www.mk5golfgti.co.uk/forum/index.php/topic,32721.msg1083142.html#msg1083142 (http://www.mk5golfgti.co.uk/forum/index.php/topic,32721.msg1083142.html#msg1083142)
Title: Re: Which oil ?
Post by: teo_parvu on February 10, 2018, 12:51:18 pm
I've used Millers NT 10W-50 too.  :happy2:
I think I will use these sets also when it will get warmer.