What Oil Viscosity Are You Using?
#1
What Oil Viscosity Are You Using?
I've seen some board traffic on this before but without a real definitive answer. My dealer says 5W-40. My local motorsports shop says 0W-40 (which is I think what the factory ships). The guy I bought my GT3 from (and who is a serious track guy) says 10W-50. I'm confused and would greatly appreciate anyone who could clear this issue up.
#5
Thanks Rich, I should have that Excellence issue and will look up the article. As you can see from the responses already recieved, there does not seem to be a consensus on this question.
#7
The MOTUL 300V 15W50 I can't keep on the shelf. Been very happy with the feedback I am getting from customers. Will try the just received 300 V Le Mans 20W60 when it gets hotter down here.
Theo
Trending Topics
#8
I use MOBIL ONE 15-50 in everything I have-race MX bikes lawn mowers Porsches. But talking to a noted TT expert that I trust very much he said here in the desert I should use 5-40.
its 110-120 in Aug. here.
I have ONE HELLUVA time finding it. But this weekend at Fontana Performance
has a new oil NOT mobil in 5-40 and they said it was a good oil fully synthetic.
I have to do some research but they said it was good.
its 110-120 in Aug. here.
I have ONE HELLUVA time finding it. But this weekend at Fontana Performance
has a new oil NOT mobil in 5-40 and they said it was a good oil fully synthetic.
I have to do some research but they said it was good.
#9
+1. I also saw that long article on oil, and I thought i knew it all. bottom line 0W-40 is what Porsche recommend and why would we think we know better. Most damage to motor is at start up thus 0W is important. so you have to balance your damage on motor at start up and your street use. If you were a race only vehicle then maybe the 50 wt oil would be recommended. bottom line lower wt oil lubricates the motor better because it is thinner and gets to where it has to go faster and freer contrary to what you would think that thicker oil is better it is not necessarily true. Thicker oil takes longer to lubricate and is only better at a high temp a temp that your street car rarely sees.
#10
Aside from what the manual says it depends where you live. 0 to 15 is a huge difference if you are running the car in winter, 15 would be like tar. In the south though the higher viscosity 40 should be suffice. I guess if you were on a track in 100+F maybe 50 wouldn't break down as soon. That being said, I personally think you could probably run the stock oil for 60,000miles.
#11
+1. I also saw that long article on oil, and I thought i knew it all. bottom line 0W-40 is what Porsche recommend and why would we think we know better. Most damage to motor is at start up thus 0W is important. so you have to balance your damage on motor at start up and your street use. If you were a race only vehicle then maybe the 50 wt oil would be recommended. bottom line lower wt oil lubricates the motor better because it is thinner and gets to where it has to go faster and freer contrary to what you would think that thicker oil is better it is not necessarily true. Thicker oil takes longer to lubricate and is only better at a high temp a temp that your street car rarely sees.
#12
i use valvoline vr1 racing 20w 50 (in my turbo)that is what my tunner recomends and thats what i use , as i trust him fully . he said he has seen engine failures with the 0-40 mobil one , and to stay away from it.
#14
I am still amazed at the diversity of opinion on this issue. Surely there must be a "right" answer. Why wouldn't we assume that the Porsche recommended viscosity would be correct?