We have a couple of VW TDIs and they call for 10,000 mile oil changes.
On the older of the two I've done 10k mile changes with synthetic
Rotella oil and it has 243,000+ miles on it and still burn oil. I got
51.2 mpg on the last tank in that car too.
I use the same oil in my Elise but do the changes every 7500 miles or
once a year (whichever comes first).
I'm a firm believer in reading the manual and seeing what the guys
that built it say I should use.
-Paul
On Wed, Oct 22, 2008 at 1:02 PM, Chip Mautz <clmautz@gmail.com> wrote:
> I'm a renegade, I guess - or maybe a maverick? :-)
> I don't subscribe to the change early and often mantra, I go usually
> 10-15k/oil change in my vehicles.
>
> I've done this with:
>
> a 2002 Pontiac Grand Prix GTP (supercharged), no problems
> a 2007 Jeep Wrangler - 30k miles so far, no problems
> a 1999 BMW 323i - 142k miles, no problems
> a 1988 BMW 528e - 250k miles, no problems
> a 2001 Dodge Ram 1500
> a 1996 Land Rover Discovery
>
> and many other vehicles I've owned. Some dino, some synthetic (old mobil 1
> formula).
>
> On another note - be aware, there is a new mobil 1 formula, which may not
> protect like the mobil 1 of old. Saw that on the net - maybe from some SCCA
> racers.
>
> Chip
>
>
>
> On Wed, Oct 22, 2008 at 11:29 AM, Mark Andy <mark@sccaprepared.com> wrote:
>
>> Howdy,
>>
>> On Wed, 22 Oct 2008, Bob Spidell wrote:
>>
>>> Ford recommends their 5W-20 semi-synthetic for my new Mustang--you think
>>> 30W is thin!--and oil changes every 7,500 hundred miles regardless of usage.
>>> I gave it a lot of thought and, since I drive mostly city miles, decided to
>>> go to a 5,000 mile interval. And, I stuck with the 5W-20--against my
>>> instincts, at first--when I found I can get it for $2/qt at WalMart. Yes,
>>> the manufacturers need better CAFE numbers, but new engines are built with
>>> such tight clearances a quality thinner oil will be fine. I believe Ford's
>>> engineers know what they're doing--even if their accountants don't ;)
>>>
>>
>> Everyone should make their own decision on this stuff, but you can get oil
>> analysis done (what's the plural of analysis?) to tell you the condition of
>> your oil. You can use that to determine if its ok to extend your change
>> intervale.
>>
>> One place is blackstone: http://www.blackstone-labs.com/
>>
>> I've been happy with their service and the price is pretty reasonable to
>> me.
>>
>> I routinely run >5k miles on conventional oil in our Chevy Venture and
>> Toyota MR2 and >8k on synthetic in our Honda Civic. Oil analysis in each
>> case at the end of a run made me feel fine with that.
>>
>> Mark
>>
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