Mobil1 5W-50
#46
Rennlist Member
The cheapest source for 5W-50 seems to be
http://thelubricantstore.com/mobil-1-5w50-6x1qt.html
But depending on shipping costs, compare it to a local Napa store which might carry it-
As mentioned, Advance had the right filter wrench, 76mm/14 flutes. I had been searching for the right one and there seemed to be some confusion on other posts.
So what are the odds that another GT3 pulls up to Advance parts while you're there???
http://thelubricantstore.com/mobil-1-5w50-6x1qt.html
But depending on shipping costs, compare it to a local Napa store which might carry it-
As mentioned, Advance had the right filter wrench, 76mm/14 flutes. I had been searching for the right one and there seemed to be some confusion on other posts.
So what are the odds that another GT3 pulls up to Advance parts while you're there???
#47
Race Director
Ive been using Motul 5w40 for the last year or so. Saw some GT3 race teams at Sebring using it and it's Porsche approved. Also saw GT3 race teams using Total too. Didn't see any Mobil 1 in the pits.
#48
^^^ All to do with sponsorship.
For the rest of us its personal choice on mainly hear-say and advertising.
Only a few of us are **** enough to NDT and DT in lab and on track plus oil analysis to come to any meaning full answer.
For the rest of us its personal choice on mainly hear-say and advertising.
Only a few of us are **** enough to NDT and DT in lab and on track plus oil analysis to come to any meaning full answer.
#49
the blackstone anaylsis are a good measure of the life left in your oil, not the life left in your engine. here's a case where the engine bearings were on the verge of catastrophic failure and the analysis came back showing no signs of accelerated engine wear (not that it could've picked up these signs too well)
thread
http://www.m5board.com/vbulletin/e60...50k-miles.html
bearings
http://www.m5board.com/vbulletin/e60...ml#post3508129
oil analysis
http://www.m5board.com/vbulletin/e60...ml#post3516913
thread
http://www.m5board.com/vbulletin/e60...50k-miles.html
bearings
http://www.m5board.com/vbulletin/e60...ml#post3508129
oil analysis
http://www.m5board.com/vbulletin/e60...ml#post3516913
#52
So what's the best oil and viscosity to use for an RS that sees track time and in a warm So Cal climate?
#54
Rennlist Member
USC my shop uses torco sr5gdl 5w-40 in all the street/track gt cars they do and sr5r in the cup cars. I did an oil change sr5gdl to give it a shot and ran it on track all weekend pretty hard. It was only mid 60s but car ran cool and strong. It also runs quieter than with m1. Basically they see valve guide wear on these engines (sharkwerks has said same) and with the torco they see that diminished quite a bit. These guys have several gt engine builds going on at any point in time so I like to think they know the engines. They also said they can run the oil longer than m1 under track conditions based on oil analysis they have done comparing the oils . About 2x m1 if I recall.
Let the oil wars begin! :-)
Let the oil wars begin! :-)
#55
USC my shop uses torco sr5gdl 5w-40 in all the street/track gt cars they do and sr5r in the cup cars. I did an oil change sr5gdl to give it a shot and ran it on track all weekend pretty hard. It was only mid 60s but car ran cool and strong. It also runs quieter than with m1. Basically they see valve guide wear on these engines (sharkwerks has said same) and with the torco they see that diminished quite a bit. These guys have several gt engine builds going on at any point in time so I like to think they know the engines. They also said they can run the oil longer than m1 under track conditions based on oil analysis they have done comparing the oils . About 2x m1 if I recall.
Let the oil wars begin! :-)
Let the oil wars begin! :-)
Which one of these is the one that you are referring to?
OR
#56
Rennlist Member
Its the SR-5 GDL 5w-40, I think retail is 19.50 per liter. BBI sells it at the shop locally. Yeah, it's not cheap.
You can use the SR5-R also, but it has a higher additive content that isn't quite as friendly to our cats (supposedly, but don't quote me).
http://www.torcousa.com/torco_product/sr-5.html
I need to ask BBI on Monday, having car checked out after my track weekend and before next one, I'll find out what they recommend as far as track time/miles Torco vs. M1 based on their experience.
Again, I'm not an oil expert or advocate one way or another, I've used M1 for years in all my cars. So far pleased with the way Torco is performing, car running smooth, cool, and quiet. I'm going to be doing an oil analysis on the next fill.
You can use the SR5-R also, but it has a higher additive content that isn't quite as friendly to our cats (supposedly, but don't quote me).
http://www.torcousa.com/torco_product/sr-5.html
I need to ask BBI on Monday, having car checked out after my track weekend and before next one, I'll find out what they recommend as far as track time/miles Torco vs. M1 based on their experience.
Again, I'm not an oil expert or advocate one way or another, I've used M1 for years in all my cars. So far pleased with the way Torco is performing, car running smooth, cool, and quiet. I'm going to be doing an oil analysis on the next fill.
#57
Rennlist Member
I thought this thread was interesting so I'm posting an additional question:
What is considered normal oil consumption for a car that is driven 1/2 "normal" day to day and 1/2 spirited in the mountains?
What is considered normal oil consumption for a car that is driven 1/2 "normal" day to day and 1/2 spirited in the mountains?
#58
Rennlist Member
Thread Starter
I personally haven't detected any oil consumption during the almost 10 years of owning my GT3
Doing the 5W-50 change this afternoon.
That little oil filter stem o-ring costs almost $12 at the dealer, not much cheaper online. I don't change it every year, curious to see if it's showing any signs of swelling or brittleness.
As I've stated many times, for South FL weather the 5W-50 is an excellent choice, and the Mobil is Porsche approved. Strangely, the Castrol 5W-50 isn't-
If one wants a more robust oil with high levels of zinc, Mobil 0W-50 Racing oil is available, but probably detrimental to the cats and pretty expensive. The 5W-50 at Napa is often on sale, less than $6 a quart-
JB
Doing the 5W-50 change this afternoon.
That little oil filter stem o-ring costs almost $12 at the dealer, not much cheaper online. I don't change it every year, curious to see if it's showing any signs of swelling or brittleness.
As I've stated many times, for South FL weather the 5W-50 is an excellent choice, and the Mobil is Porsche approved. Strangely, the Castrol 5W-50 isn't-
If one wants a more robust oil with high levels of zinc, Mobil 0W-50 Racing oil is available, but probably detrimental to the cats and pretty expensive. The 5W-50 at Napa is often on sale, less than $6 a quart-
JB
#59
Motul Sport 5w50 is another great oil, been using for a while now