Make a donation
« previous next »
Pages: [1] 2 3 4   Go Down

Author Topic: 5w40 or 5w30?  (Read 57798 times)

Offline chopper

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 0
  • Posts: 137
5w40 or 5w30?
« on: May 23, 2012, 08:23:54 pm »
running 350bhp ed30 and oil levels are running low, and i normally top up with 5w30. opieoils recommended 5w40 instead. anyone else shed some light on which is best?
Logged

Offline B1NCC 1.8T

  • Always Involved
  • ****
  • Thank You
  • -Given: 5
  • -Receive: 4
  • Posts: 109
    • Email
Re: 5w40 or 5w30?
« Reply #1 on: May 23, 2012, 08:27:44 pm »
5w30 is what VW recommend mate.
Logged


20vt mk2 & GTI Edition30 no 0540

Offline Luka

  • Always Involved
  • ****
  • Thank You
  • -Given: 6
  • -Receive: 32
  • Posts: 388
Re: 5w40 or 5w30?
« Reply #2 on: May 23, 2012, 08:38:37 pm »
I believe greater power MK5s should run a more viscous oil to cope better with hotter engine temperatures?

AFAIK.
Logged
Sold - 2006 Tornado Red GTI 3dr

Offline Kregiel

  • Always Involved
  • ****
  • Thank You
  • -Given: 28
  • -Receive: 20
  • Posts: 469
  • Supersonic
Re: 5w40 or 5w30?
« Reply #3 on: May 23, 2012, 10:07:34 pm »
5w 30 and Castrol edge only in my view

Paul
Logged
Red 2008 GTI, H&R ARB, b12 suspension, walk, milltek non-res full exhaust, forge IC, tarox 10 pot big brake kit, RS4 valve, Forge SSK, Autotech HPFP, Xenons, K04 Turbo, Quaife LSD, South Bend stage 3 Daily with SMF clutch, XB and UB Unibraces

Offline stealthwolf

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 306
  • -Receive: 291
  • Posts: 7836
  • ED30 No.1412
    • Email
Re: 5w40 or 5w30?
« Reply #4 on: May 23, 2012, 10:11:25 pm »
5W-30 in a standard engine. Most on here who are modded also use 5W-30 but there's a growing consensus that 5W-40 is better for a modded engine as it tends to run hotter.
Logged

The GTI isn't just a machine. It's very much a living, breathing thing.

Offline E30Dom

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 42
  • -Receive: 76
  • Posts: 2100
Re: 5w40 or 5w30?
« Reply #5 on: May 23, 2012, 10:24:52 pm »
I echo above... but run 5w-30 still... :laugh:
Logged
Diesel Daily Hack.

Offline chopper

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 0
  • Posts: 137
Re: 5w40 or 5w30?
« Reply #6 on: May 23, 2012, 11:47:39 pm »
ill probably run 5w30 this time, but 5w40 shouldnt cause any issues if i run it next time?
Logged

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php/topic,19740.0.html
Re: 5w40 or 5w30?
« Reply #7 on: May 24, 2012, 12:04:24 am »
5w40. The oil will keep its viscosity at high temps better :-)
Logged

Offline gazon69

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 20
  • -Receive: 34
  • Posts: 1017
Re: 5w40 or 5w30?
« Reply #8 on: May 24, 2012, 07:44:58 am »
Quote from: richwig83 on May 24, 2012, 12:04:24 am
5w40. The oil will keep its viscosity at high temps better :-)
All the way. Did mine last week with castrol edge. They had an offer on at halfrauds :happy2:
Logged

Offline Viking

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 17
  • -Receive: 47
  • Posts: 747
Re: 5w40 or 5w30?
« Reply #9 on: May 24, 2012, 08:45:03 am »
Personally I'd use a better oil than Castrol. Mobil would be my choice.
Logged
Sarcasm for free. Anything after that can only be considered as a bonus.

Just because you think you know something, doesn't make you an expert if you've just read it on the internet, y'know.

Offline gazon69

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 20
  • -Receive: 34
  • Posts: 1017
Re: 5w40 or 5w30?
« Reply #10 on: May 24, 2012, 09:06:39 am »
Not really that bothered tbh as i change it every 4k anyways. :happy2:
Logged

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Re: 5w40 or 5w30?
« Reply #11 on: May 24, 2012, 09:09:24 am »
Here in the states the recommended grade is 5W40. Going to do a change this weekend with Castrol SPT synt. and installing a drain valve as well. Drains will just be a flip of a switch from now on.
Logged
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline Kregiel

  • Always Involved
  • ****
  • Thank You
  • -Given: 28
  • -Receive: 20
  • Posts: 469
  • Supersonic
Re: 5w40 or 5w30?
« Reply #12 on: May 24, 2012, 09:24:28 am »
Quote from: Viking on May 24, 2012, 08:45:03 am
Personally I'd use a better oil than Castrol. Mobil would be my choice.

Castrol Edge 5w30 is far superior for TFSI engine then any Mobil oil. In fact don't think any Mobil is approved for VW TFSI engines
Logged
Red 2008 GTI, H&R ARB, b12 suspension, walk, milltek non-res full exhaust, forge IC, tarox 10 pot big brake kit, RS4 valve, Forge SSK, Autotech HPFP, Xenons, K04 Turbo, Quaife LSD, South Bend stage 3 Daily with SMF clutch, XB and UB Unibraces

Offline Tfsi_Mike

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 241
  • -Receive: 309
  • Posts: 10222
  • Go Large or Go Home
    • Tfsi Mikes Money Pit AKS / TTE / RTech St2+ Cupra
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,32721.msg402587.html#msg402587
Re: 5w40 or 5w30?
« Reply #13 on: May 24, 2012, 09:28:01 am »
Quote from: ROH ECHT on May 24, 2012, 09:09:24 am
Here in the states the recommended grade is 5W40. Going to do a change this weekend with Castrol SPT synt. and installing a drain valve as well. Drains will just be a flip of a switch from now on.

Drain valve?  :popcornsoda:
Logged

Offline james

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 6
  • -Receive: 19
  • Posts: 594
Re: 5w40 or 5w30?
« Reply #14 on: May 24, 2012, 09:39:04 am »
Quote from: Tfsi_Mike on May 24, 2012, 09:28:01 am
Quote from: ROH ECHT on May 24, 2012, 09:09:24 am
Here in the states the recommended grade is 5W40. Going to do a change this weekend with Castrol SPT synt. and installing a drain valve as well. Drains will just be a flip of a switch from now on.

Drain valve?  :popcornsoda:

it is the oil slick button next to EPS.  :happy2:
Logged
Pages: [1] 2 3 4   Go Up
« previous next »