[s-cars] Castrol GTX High Mileage Oil - the real issue is not "seals"

[Peter]

Scotty may be difficult at times if you can't tune into his sense of humor; but his Audi advice and opinions have always been spot on.

Sent from my iPhone

> On Dec 17, 2013, at 1:10 PM, "Stott Hare" <stott at gwi.net> wrote:
> 
> Taka,
> 
> You act like a Jersey housewife trying to provoke a catfight.  Apparently
> you perceive yourself behind in some score and felt the need to call Scott
> out on some random thread.  Don't be so surprised or let your ego swell too
> much just because he answered.
> 
> -S
> 
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Taka Mizutani
> Sent: Tuesday, December 17, 2013 1:07 PM
> To: Scott Justusson
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] Castrol GTX High Mileage Oil - the real issue is not
> "seals"
> 
> Scott- is Castrol GTX HM formulated for higher ZDDP? The current S* spec oil
> mandates lower ZDDP levels, so you won't find a conforming oil with high
> ZDDP levels.
> 
> I'm glad that you find it so important to comment every time I put anything
> on the list.
> 
> 
>> On Tue, Dec 17, 2013 at 1:11 AM, Scott Justusson <qshipq at aol.com> wrote:
>> 
>> Sigh, here we go again....  This has nothing to do with seals, 
>> swelling or
>> (OMG) the switch from synthetic to dino oil.  This is an educated 
>> mechanic legitimate concern about M1 products reducing the levels of 
>> Zinc and Phosporus to comply with the lower EGR/catalyst effects of 
>> wear additives, driven by the EPA>Car Manufacturers.  One might argue 
>> that, esp on cold start, an engine at 245k would benefit from extra 
>> ZDDP(dino)/ZDTP(synth) Zinc and Phosphorus.  Previous levels were in 
>> the 1100-1300 range, the new standard is sub 800.  M1 Claims this change
> is safe for new and 'old'
>> vehicles, but I think that is plain marketing BS.
>> 
>> The best compromise to the OP IMO, is to switch to M1 Turbo Diesel 
>> Truck Oil or a Delvac Synthetic, as both retain much higher levels of 
>> cold start/worn engine tolerance, wear barriers.  Short of that, a 
>> change to a Castrol dino product will yield the same results.
>> 
>> As a rule I don't enjoy engine oil discussions, but dragged in by a 
>> point-by, happy to back up the educated mechanic recommendation and 
>> concern, than anyone focused on 'swelling seals' totally missing the 
>> legitimate issue.
>> 
>> BTW those in select states might just find that M1 Turbo Diesel Truck 
>> oil by the gallon at Autozone, is less than Wallyworld brand dino oil.
>> BtstockeduponT
>> 
>> Taka, you just try to hard, it's the Holidays, and it would appear Mr 
>> Rodrigez educated mechanic is just looking out for a good customer.
>> 
>> Cheers
>> 
>> S "Taka point-by again" J
>> 95.5 S6 M1 Turbo Diesel Truck OIl
>> 
>> 
>> 
>> 
>> -----Original Message-----
>> From: Taka Mizutani <t44tqtro at gmail.com>
>> To: s-car-list <s-car-list at audifans.com>
>> Sent: Mon, Dec 16, 2013 2:50 pm
>> Subject: Re: [s-cars] Castrol GTX High Mileage Oil
>> 
>> 
>> I would not do that myself- going from full synthetic to a 
>> conventional oil with seal swellers doesn't really make sense to me, 
>> especially if you've had no issues with running synthetic. The 
>> synthetic will last longer and be more resistant to viscosity 
>> breakdown, often has a lower pour point and a higher flash point.
>> 
>> However, you should ask Scott because I am not qualified to answer any 
>> questions about cars at all.
>> 
>> 
>> On Mon, Dec 16, 2013 at 2:56 PM, Thomas Rodriguez <trodri69 at gmail.com
>>> wrote:
>> 
>>> My '95 S6 has 245K miles.  Head was rebuilt about 40K miles ago but 
>>> otherwise the engine is original. I've been using Mobil 1 5W/30 
>>> synthetic motor oil for as long as I can remember. Engine runs 
>>> strong. I add about
>> a
>>> quart between scheduled oil and filter changes every 3K miles.  
>>> Otherwise there are no signs of burning or leaking oil.
>>> 
>>> Last week my mechanic recommended we switch to Castrol GTX High 
>>> Mileage 5W/30. I agreed and have driven about 300 miles with this 
>>> oil in the engine.  I understand that this oil is not synthetic.
>>> 
>>> Any thoughts about using the Castrol GTX HM oil?
>>> 
>>> Tom
>>> '95 S6
>>> _______________________________________________
>>> S-CAR-List mailing list
>>> http://audifans.com/mailman/listinfo/s-car-list
>>> http://www.audifans.com/kb/List_information
>> _______________________________________________
>> S-CAR-List mailing list
>> http://audifans.com/mailman/listinfo/s-car-list
>> http://www.audifans.com/kb/List_information
>> 
>> 
>> _______________________________________________
>> S-CAR-List mailing list
>> http://audifans.com/mailman/listinfo/s-car-list
>> http://www.audifans.com/kb/List_information
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information
> 
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information