Oil and Brake fluid
07-31-2014, 11:28 PM
#1
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Oil and Brake fluid
For those who plan to track their GT3------
What high-temp brake fluid do you use and how often do you change it?
Same question for oil. What do you use and how often do you change it?
(I heard that the synthetic mobil product is not what it used to be, even though Porsche still recommends it)
Appreciate all thoughts
What high-temp brake fluid do you use and how often do you change it?
Same question for oil. What do you use and how often do you change it?
(I heard that the synthetic mobil product is not what it used to be, even though Porsche still recommends it)
Appreciate all thoughts
08-01-2014, 02:57 AM
#2
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Brakes seem to be unfazed by anything I do even with stock pads and fluid - cooling seems to be really well designed on this generation (for comparison, I managed to overheat 385mm Alcon brakes at Watkins Glen with my previous car). So given that there are no heat issues, I see no reason to change fluid more than once a season, especially given low humidity here (I do not think it really rained since I moved to SF a year ago). I will do a flush Motul 600, Endless or Castrol SFR fluid every 12 months, unless someone convince me otherwise.
As for the oil - my plan is to follow Porsche recommended maintenance for track use, changing oil just a bit more frequently to be on the safe side.
As for the oil - my plan is to follow Porsche recommended maintenance for track use, changing oil just a bit more frequently to be on the safe side.
08-01-2014, 08:21 AM
#4
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08-03-2014, 05:02 PM
#6
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Appreciate the thoughts so far.
Done a lot of research and Castrol SRF appears to be the consensus brake fluid of choice with a much higher wet boiling point than Motul or ATE. Apparently the Castrol doesn't need to be flushed as often as the other two, despite being more expensive to start with.
I have another question regarding the oil. I was thinking of using Mobil 5/50 to ensure protection during summer racing. I asked the dealer about this yesterday and they suggested I leave in the current oil until I had completed the break-in period. They were surprising uncertain of what oil to recommend in my climate (Philadelphia), for someone who will be tracking a GT3 once a month, DD it half of the week, and not driving the GT3 during the two-three coldest months of the year.
Would you guys use a 5/50 oil for that type of driving?
Done a lot of research and Castrol SRF appears to be the consensus brake fluid of choice with a much higher wet boiling point than Motul or ATE. Apparently the Castrol doesn't need to be flushed as often as the other two, despite being more expensive to start with.
I have another question regarding the oil. I was thinking of using Mobil 5/50 to ensure protection during summer racing. I asked the dealer about this yesterday and they suggested I leave in the current oil until I had completed the break-in period. They were surprising uncertain of what oil to recommend in my climate (Philadelphia), for someone who will be tracking a GT3 once a month, DD it half of the week, and not driving the GT3 during the two-three coldest months of the year.
Would you guys use a 5/50 oil for that type of driving?
08-03-2014, 08:58 PM
#7
Appreciate the thoughts so far.
Done a lot of research and Castrol SRF appears to be the consensus brake fluid of choice with a much higher wet boiling point than Motul or ATE. Apparently the Castrol doesn't need to be flushed as often as the other two, despite being more expensive to start with.
I have another question regarding the oil. I was thinking of using Mobil 5/50 to ensure protection during summer racing. I asked the dealer about this yesterday and they suggested I leave in the current oil until I had completed the break-in period. They were surprising uncertain of what oil to recommend in my climate (Philadelphia), for someone who will be tracking a GT3 once a month, DD it half of the week, and not driving the GT3 during the two-three coldest months of the year.
Would you guys use a 5/50 oil for that type of driving?
Done a lot of research and Castrol SRF appears to be the consensus brake fluid of choice with a much higher wet boiling point than Motul or ATE. Apparently the Castrol doesn't need to be flushed as often as the other two, despite being more expensive to start with.
I have another question regarding the oil. I was thinking of using Mobil 5/50 to ensure protection during summer racing. I asked the dealer about this yesterday and they suggested I leave in the current oil until I had completed the break-in period. They were surprising uncertain of what oil to recommend in my climate (Philadelphia), for someone who will be tracking a GT3 once a month, DD it half of the week, and not driving the GT3 during the two-three coldest months of the year.
Would you guys use a 5/50 oil for that type of driving?
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08-03-2014, 09:10 PM
#8
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I use endless. Good stuff. Brakes are always amazing. I do a bleed after a weekend event. Probably overkill as the stuff coming out looks just like stuff going in.
endless, motul, castrol srf
endless, motul, castrol srf
08-03-2014, 11:07 PM
#9
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Thread Starter
Don't worry about summer temps where you are. The engine cooling system is phenomenal in this car. I use stock Mobil 1 0W40 and oil temp has not gotten a hair over 230, and that is in 100 degree weather. FWIW, I use Motul 600 brake fluid. I don't bleed the brakes but replace the fluid every 3-4 months (assuming I continue to track 3-4 times a month.
I do wonder about the need to bleed the brakes if you use one of the several common racing brake fluids and you replace the fluid frequently. Your approach seems very reasonable.
BTW, I've been meaning to ask you. The mechanic that you go to and reference frequently. Is he a private guy that specialized in german cars, in Porsches, or just people who race?
As I get more serious about racing, I need to find myself someone like that in the western Philly area.
07-21-2015, 02:14 PM
#10
I also use castrol SRF, and it's quite good!
The fluid gets hot and I have a little mushroom pedal (after 10/15min, on a track like Nürburgring GP), but it always comes back firm when cooled.
And it was confirmed later by bleeding the calipers : almost no bubble!
Talking about this mushroom pedal, could it be also from the brake lines in "rubber", working too much? Maybe some braided steel could help on that?
Last thing about the braking system, which surprise me : if you correctly (completely) fill the tank, some fluid will get out from calipers on the first few minutes on track!
The fluid gets hot and I have a little mushroom pedal (after 10/15min, on a track like Nürburgring GP), but it always comes back firm when cooled.
And it was confirmed later by bleeding the calipers : almost no bubble!
Talking about this mushroom pedal, could it be also from the brake lines in "rubber", working too much? Maybe some braided steel could help on that?
Last thing about the braking system, which surprise me : if you correctly (completely) fill the tank, some fluid will get out from calipers on the first few minutes on track!
07-21-2015, 10:15 PM
#11
RL Community Team
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Motul 300v 5w-50
07-22-2015, 03:15 AM
#12
I also use castrol SRF, and it's quite good!
The fluid gets hot and I have a little mushroom pedal (after 10/15min, on a track like Nürburgring GP), but it always comes back firm when cooled.
And it was confirmed later by bleeding the calipers : almost no bubble!
Talking about this mushroom pedal, could it be also from the brake lines in "rubber", working too much? Maybe some braided steel could help on that?
Last thing about the braking system, which surprise me : if you correctly (completely) fill the tank, some fluid will get out from calipers on the first few minutes on track!
The fluid gets hot and I have a little mushroom pedal (after 10/15min, on a track like Nürburgring GP), but it always comes back firm when cooled.
And it was confirmed later by bleeding the calipers : almost no bubble!
Talking about this mushroom pedal, could it be also from the brake lines in "rubber", working too much? Maybe some braided steel could help on that?
Last thing about the braking system, which surprise me : if you correctly (completely) fill the tank, some fluid will get out from calipers on the first few minutes on track!