Shell Helix Ultra
#1
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The October issue of Panorama lists Shell Helix Ultra (5W-40) as the Porsche recommended oil for 993s.
I switched to Brad Penn 20W-50 this year from Mobil 1 (15W-50), but would feel more comfortable with a pure synthetic and one recommended by Porsche.
Is anyone using Helix Ultra?
Thanks
Gus
'95 993 C2
I switched to Brad Penn 20W-50 this year from Mobil 1 (15W-50), but would feel more comfortable with a pure synthetic and one recommended by Porsche.
Is anyone using Helix Ultra?
Thanks
Gus
'95 993 C2
#2
Guru
Lifetime Rennlist
Member
Rennlist Small
Business Sponsor
Lifetime Rennlist
Member
Rennlist Small
Business Sponsor
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Personally I would stick with the heavier of the two choice, 15w50 or like you have the 20w50.
Where are you located?
Where are you located?
#4
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Hi Chris - I live near Chicago. I have wondered if the 20W-50 is too thick for winter, but the car is garaged and I was told it should be OK. My mechanic would also agree with the heavier weight oil in general.
Gus
Gus
#5
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
FWIW, I blend Brad Penn 20W50 and 10W30 50%-50% to get an effective 15W-40. I checked with Brad Penn and they concurred that this was permissible. Seems to me to be a good solution. Less expensive than the synthetics and I change oil in my low mileage cars once a year anyway.