Unleaded or Premium?

783 posts · joined Jan 2005 · 7 Jul 2005, 6:38 pm

#381452

Is it better to put premium petrol in my fasty rather than unleaded? And should I be adding the lubricant to both types, or just unleaded? Im new to the car scene so any advice would be great :-)

crewcabconnection Being Sid James

1,922 posts · joined Apr 2003 · 7 Jul 2005, 6:41 pm

#381455

Premium unleaded in my 2.0 Bus mate for sure. LRP is shite. Had no hassles at all with it in 4 years.

Loves a lolcat

Midlife crisis Nartispuddlejumper, Bureau of Toxicity

2,282 posts · joined May 2003 · 7 Jul 2005, 6:42 pm

#381457

I use premium unleaded with no additive in my fastie and beetle, and have had no problems so far. My fastie has had it for the past 2 years.

Kathy

If you can't laugh at yourself you can't laugh at anyone else! Because life is to short not to LAUGH

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 7 Jul 2005, 8:50 pm

#381531

premium in my beetle no additive, I get more kms out of a tank so it works out about the same $. been doing so for about six months with no noticable valve problems

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Dave-super74 Learner Dubber

11 posts · joined Mar 2003 · 7 Jul 2005, 9:24 pm

#381562

I have been using standard unlead since 2001 in my superbug.
No additives at all.

I may try the premium unlead just to see the results.

VDUBXTC Tea Bag

3,587 posts · joined Feb 2003 · 7 Jul 2005, 10:29 pm

#381606

Dave try the premium mate.
the regular unleaded hasn't got enough octane rating.
just go the premium with or without aditive your choicenn[ Edited on 7-7-2005 by manx_xtc ]

Jasmine the 75 L Bug
56 oval, 2000 New Beetle

twoguns simply aircooled

4,275 posts · joined Nov 2002 · 7 Jul 2005, 10:35 pm

#381609

i have a new built in da splitta and was told to use premium.
ever since i run the same accros my fleet. stock or modded.

Simply Cruzin'...

helbus Administrator Mad fabricator, paint and body

7,386 posts · joined Sep 2002 · 8 Jul 2005, 12:07 am

#381631

Water

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NigeType3 Officially Full-On Dubber

371 posts · joined Dec 2002 · 8 Jul 2005, 12:06 pm

#381751

Their was a dedicat speal on this subject some time ago by someone who new heaps about this stuff.
But the basic gist is the VW started running hardend valve seats in the 60's so don't need the lead in the petrol to lube them and it depends on your compresion ratio as to how much octain you need. Modified engines generally run higher CR's so be safe and run 98ron fuel. Were std 40hp motors should be able to run regular unleaded.

This is just a basic understanding of what I have read on this forum I am by know means an expert on this subject.

Warrenm Wolfsburg Wizard

466 posts · joined Aug 2004 · 8 Jul 2005, 7:24 pm

#381950

Seats can be OK -it seems to be guides that are problem without additive,
I use premium in 2 litre Kombi and 280E MB with splash of additive occasionally.
No problems in 2 years. Vortex does not seem to be as good.

Kombi Konnection
Beetle Bugs and Dubs

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 8 Jul 2005, 8:19 pm

#381970

Warrenm wrote:Seats can be OK -it seems to be guides that are problem without additive,

Whats the rationale here??
This i gotta hear!!E:vader
L8tr
nn[ Edited on 8/7/05 by tassupervee ]

Im not a complete idiot, quite a few parts are missing....

oval TOFU Bitte, ein Bit!

2,946 posts · joined Jul 2003 · 8 Jul 2005, 8:56 pm

#381987

so, you might as well use the 98 RON? not 95 RON?

...and Robert's ya father's brother...

Warrenm Wolfsburg Wizard

466 posts · joined Aug 2004 · 8 Jul 2005, 10:41 pm

#382017

tassupervee wrote:
Warrenm wrote:Seats can be OK -it seems to be guides that are problem without additive,
Whats the rationale here??
This i gotta hear!!E:vader
L8tr
nn[ Edited on 8/7/05 by tassupervee ]

I understand the valve guides are not hardened.

Kombi Konnection
Beetle Bugs and Dubs

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 9 Jul 2005, 5:41 pm

#382204

[/quote]
I understand the valve guides are not hardened. [/quote]

Nah dude, nothing to do with the valve guides.
The guides are kept alive with engine oil.

Its purely the valve seats that can suffer due to the lack of "cushioning" effect, one of the useful properties of tetraethyl lead.
l8TR
e

Im not a complete idiot, quite a few parts are missing....

toplessbug Fahrvergnugen

879 posts · joined Aug 2002 · 9 Jul 2005, 6:08 pm

#382216

what he said , remember vw specify 91 octane(ron)which coincedently is what aus produces as standard unleaded,this will suffice for stock engines .