[DeTomaso] synthetic vs pennzoil

[Dave Londry]

Mobil1 15W-50 was the only one that had enough zinc&phosphorous - it was 
racing oil.
**All the rest were unsuitable.**
But - the last spec was April 09, so it looks like they took the guts 
out of it too, probably down to 800 ppm now.
So like Asa Jay says - it'll be fine, bit needs about 600 ppm of ZDDP 
additive.
Pennzoil 10W40 Normal or Ultra or Platinum never had it in the first place.
If you take Platinum and give it the same ZDDP dose it should maybe as good.
dave



Asa Jay Laughton wrote:
> I -hate- Pennzoil.  But that's a personal opinion, mostly built on 
> engines (having run Pennzoil) I've taken apart and found great gobs of 
> black paraffin built up on rockers arms, springs, clogged passages, 
> timing gears, etc.
>
> But it might work okay for you.  Mobil 1 is probably better, and you 
> might still run some ZDDP.
>
> Asa Jay
>
> Asa Jay Laughton, MSgt, USAFR, Retired
> &  Shelley Marie
> Spokane, WA
> ******************************
> http://www.racingagainstautism.com
> http://www.teampanteraracing.com
>
>
> On 7/20/2010 19:46, LEVITT1946 at aol.com wrote:
>   
>> Hello Group,
>>
>> Just wanted to hear what the group thinks of mobil 1 10w40  vs  pennzoil
>> 10w40.
>>
>> I have run both in the car. When i ran the car in the Gumball I used
>> Pennzoil .The car ran fine but My feeling is that MOBIL 1 is a better  choice.
>>
>> Lets take a vote.
>>
>> Bob
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