Official SARX Lounge
04-10-2012, 10:52 AM
#7057
SARX Legend
iTrader: (46)
Synthetic or Dino? I emailed Mobil1 once and they said the minimum recomended operating temp should be 200F and that the minimum should be 160F. I did read an article once that showed a 5WHP difference on a engine that was dynoed with oil temps at 150F and again at 220F. I also recall Eric M stating that what was more important was diff temp, he said they showed a significant increase in HP once the diff was up to temp.
04-11-2012, 06:52 AM
#7064
the engineer we had yesterday had some pretty good information.....
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
04-11-2012, 09:12 AM
#7065
SARX Legend
iTrader: (46)
Nope............And turblown has not responded to my PM's as of yesterday. I will give it a day or two before I go ballistic.
Cool video man.
Interesting, after seeing houstonrx8ers' bearings I will definitely be staying with synthetic. He used nothing but Castrol GTX and one of the bearings in his rotor was shot to hell.
a fun little drive my buddy and I did on Sunday before gorging.
http://www.youtube.com/watch?v=tUwLvGsHlTk
http://www.youtube.com/watch?v=tUwLvGsHlTk
the engineer we had yesterday had some pretty good information.....
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
04-11-2012, 10:06 AM
#7066
the engineer we had yesterday had some pretty good information.....
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
the optimum operating temp for "mineral" oil (where mineral is conventional) is 180F, regardless of weight. He said weight plays a different role, but not significant when it comes to operating temp.
we touched on synthetic oil for a second, pretty much it is way better than mineral because its "pure" oil. we (as a company) don't use it because of the higher op temp and its cost. did get this out of him, syn oil will burn and burn cleaner than mineral oil, but at a much higher temp.... i guess that's why its not suitable for our engines.
Castrol 10w30 GTX flash point of 410*, 75mm2/sec @ 102* 10.8mm2/sec@ 202
Castrol 10w30 GTX Syn blend, flash point 392*, 75.6mm2/sec@102 11mm2/sec at 202*
Mobil 1 10w30 flashpoint 392*, 67.4mm2/sec@102* 10.7mm2/sec@202*
Mobil 1 0w40 Flashpoint 392* 80mm2/sec@102* and 14.3mm2/sec@ 202*So it
seems synthetics have the same flashpoint as dino and burn cleaner... There's a **** ton of oil debate on the boards but there's some raw data for everyone to mull over.
04-11-2012, 10:07 AM
#7067
Nope............And turblown has not responded to my PM's as of yesterday. I will give it a day or two before I go ballistic.
Cool video man.
Interesting, after seeing houstonrx8ers' bearings I will definitely be staying with synthetic. He used nothing but Castrol GTX and one of the bearings in his rotor was shot to hell.
Cool video man.
Interesting, after seeing houstonrx8ers' bearings I will definitely be staying with synthetic. He used nothing but Castrol GTX and one of the bearings in his rotor was shot to hell.
I used 10w/30 since day one and my bearings were beautiful.
04-11-2012, 10:15 AM
#7068
SARX Legend
iTrader: (46)
Yeah I have never understood the discussion on how and if it burns (people said mobil1 didn't burn). The flashpoint of any motor oil is well under what the combustion temps are and I use a SOHN adapter so it's a moot point as far as I am concerned. All I care about is protection and 5W-20 or 5W-30 Dino oil is just not up to the task in a rotary, in the Texas heat.
Both Mazda remans with similar mileage (within 7,000 miles of each other) driven in the same conditions.
My bearing (Mobil1 0W-40):
http://www.flickr.com/photos/9krpmrx8/6153688222/
Houstonrx8ers bearing (Castrol GTX 5W-20):
http://www.flickr.com/photos/9krpmrx8/6913658990/
Both Mazda remans with similar mileage (within 7,000 miles of each other) driven in the same conditions.
My bearing (Mobil1 0W-40):
http://www.flickr.com/photos/9krpmrx8/6153688222/
Houstonrx8ers bearing (Castrol GTX 5W-20):
http://www.flickr.com/photos/9krpmrx8/6913658990/
04-11-2012, 10:17 AM
#7069
SARX Legend
iTrader: (46)
Yeah the most important detail is that both of motors were remans and neither made it to 50k despite the fact that we were both meticulous about maintenance.
It's pretty pathetic actually.
It's pretty pathetic actually.
04-11-2012, 12:05 PM
#7073
Yeah I have never understood the discussion on how and if it burns (people said mobil1 didn't burn). The flashpoint of any motor oil is well under what the combustion temps are and I use a SOHN adapter so it's a moot point as far as I am concerned. All I care about is protection and 5W-20 or 5W-30 Dino oil is just not up to the task in a rotary, in the Texas heat.
Both Mazda remans with similar mileage (within 7,000 miles of each other) driven in the same conditions.
My bearing (Mobil1 0W-40):
Houstonrx8ers bearing (Castrol GTX 5W-20):
Both Mazda remans with similar mileage (within 7,000 miles of each other) driven in the same conditions.
My bearing (Mobil1 0W-40):
Houstonrx8ers bearing (Castrol GTX 5W-20):
