Oil and plugs?

[Grant Lenahan]

1. They are not "plug picky" at all - in fact I doubt plugs are your 
problem.  I'd suspect MAF, vacuum, injector, damaged wire, intermittent 
coilpack, before a worn out plug. but you should be able to check them 
to see easily enough.

I dont know the model or gap. But even for my S4 biturbo (2.7t) I paid 
about $6.50 for OEM bosch plugs.
Buy the OEMs. They will work.

The best, vw 502 approved, ACEA A3 oil from Mobil1 is 0W40. No other 
mobil (domestic) is A3 and Vw and Porsche approved for all weather 
conditions, although the new 15W50 also meets a3 and is on Porsche's 
list for hot climates only (> 50dF).  I think that rules out norther 
Florida in the winter.

The AMSOIl is the 5W40.

I used Mobil1 5W30 for years, with great results, in my biturbo. So its 
a fine choice in a pinch.
But then I learned there's something better.  The specs on the 0W40 are 
amazing.  Better shear strength.
Much higher VI.  Thinner cold.  Thicker hot.  just plain better in 
every possible respect.

If you - or anyone reading - wants an oil spreadsheet I made with a 
very few choices compared ( and a control or two), let me know by 
email.

Grant



On Mar 4, 2007, at 6:43 PM, Tyson Varosyan wrote:

> Hi Guys,
>
> I got a 2.8L 30V in my '98 A4. I am having a little bit of a rough 
> idle and
> sometimes a bit of a miss under load below 1500RPM. I think the plugs 
> need
> to be changed. I don't know how this car is, but I have had plug 
> nightmare
> stories on my mitsu, so I want to get a feel on how plug-picky this 
> car is.
> Will generic $4 copper Autolites work (as they do in all my Audi's) or 
> does
> this thing need $14/ea triple platinum NGK's custom ordered from 
> TimBuckTu?
> For a number of reasons, I prefer plugs with single electrodes. What 
> should
> the gap be set to on these guys?
>
> Also, I did not get an owners manual with my car. Can someone post a
> chart/table of oils that I should be using under various conditions? I 
> am in
> Seattle - the car will see 25-50 degree weather in the winter and 
> 40-100
> degrees in the summer. I use 100% synthetic - either Redline or 
> Mobile1. Car
> seems to be "eating" about 1/2qt every 1000mi or so, which is not so 
> bad -
> but I gotta know what to top it off with.
>
> Tyson Varosyan
> Technical Manager, Uptime Technical Solutions LLC.
> tyson at up-times.com
> www.up-times.com
> 206-715-TECH (8324)
> UpTime/OnTime/AnyTime
>
>
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