0-40? or 15-50W?
08-26-2014, 06:31 PM
#16
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E-mail Mobil and ask who the local distributor is in your area. Then, contact that distributor, and open an account. That's what I did years ago.
BTW, Amazon and NAPA occasionally have sales on Mobil oil and you can order 5w-50 then for good savings. 
08-27-2014, 06:06 PM
#18
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Here's a good price. $48/case. But add shipping.
http://thelubricantstore.com/engine-...w50-6x1qt.html
http://thelubricantstore.com/engine-...w50-6x1qt.html
08-27-2014, 07:42 PM
#19
Race Director
Here's a good price. $48/case. But add shipping.
http://thelubricantstore.com/engine-...w50-6x1qt.html
http://thelubricantstore.com/engine-...w50-6x1qt.html
BTW, I just checked and Amazon's price has gone down to $50.55......
08-28-2014, 09:11 AM
#21
Bastards, I just received a shipment from them for the earlier price...
08-28-2014, 02:37 PM
#22
Race Director
Won't know until I do a change. The DFI 997 had a filter insert on top of the engine. On the 991 GT3 the filter has been moved to the bottom and I think it's a spin-on. The crush washer for the sump plug is probably the same (although there is a separate plug for the dry sump tank) but probably not the O-rings if the filter is different.