Summer oil types in Hot North Texas
06-15-2010, 02:15 PM
#1
First Time Rotary guy...
Thread Starter
Join Date: Jul 2009
Location: Dallas Tx
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
Summer oil types in Hot North Texas
Do you guys change the viscosity of your oil for the hot Summers down here? I am running the standard 5w-20 right now but I have been thinking about adjusting that during the summer months?
What do y'all do?
What do y'all do?
06-17-2010, 11:52 AM
#4
Registered
10W30 would work fine as would 10W40. I run only full synthetic. I have for over a decade. In 4 rotary powered cars that I've beat the crap out of, I have yet to blow up an engine.
06-17-2010, 03:21 PM
#7
SARX Legend
iTrader: (46)
Meh, my oil choices have not affected engine life despite rigorous oil change routines. Plenty of guys here have run 5W-20 the whole time without issue. Personally, I run 5W-40 synthetic but I have a SOHN adapter so my car does not "eat" engine oil.
I have had three engines despite routine changes under 3,000 miles and I am not convinced oil choice plays a big role in engine life. Just pick a good synthetic oil (5W-20 is a synthetic blend) and change it often. That is the most important thing.
1st engine: factory and 5W-20 Mobil 1 (died at 22k)
2nd engine: Castrol GTX 10W-30 (died at 96k)
3rd engine: Castrol 0W-30 (tested poorly on UOA), Mobil1 0W-40 (did ok), and currently Rotella T6 5W-40 (tested great)
I have had three engines despite routine changes under 3,000 miles and I am not convinced oil choice plays a big role in engine life. Just pick a good synthetic oil (5W-20 is a synthetic blend) and change it often. That is the most important thing.
1st engine: factory and 5W-20 Mobil 1 (died at 22k)
2nd engine: Castrol GTX 10W-30 (died at 96k)
3rd engine: Castrol 0W-30 (tested poorly on UOA), Mobil1 0W-40 (did ok), and currently Rotella T6 5W-40 (tested great)
Last edited by 9krpmrx8; 06-17-2010 at 03:26 PM.
06-17-2010, 04:14 PM
#8
i was looking at picking up a the sohn adapter but been on the wall on modifying this car under warrenty i also do 3k oil changes
1st engine used castrol 10w30 and 10w40
2nd engine used royal purple 10w30(i think) and mobile 1 0w40
3rd engine on its first oil change so far
not sure i have confidence in the factory engine, my friends rx7 is still on its original engine though has been rebuilt, maybe ill get charles to rebuild once i run out of warrenty or mm delivers my turbo, also premix
do enjoy this car to much
1st engine used castrol 10w30 and 10w40
2nd engine used royal purple 10w30(i think) and mobile 1 0w40
3rd engine on its first oil change so far
not sure i have confidence in the factory engine, my friends rx7 is still on its original engine though has been rebuilt, maybe ill get charles to rebuild once i run out of warrenty or mm delivers my turbo, also premix
do enjoy this car to much
06-17-2010, 04:31 PM
#9
SARX Legend
iTrader: (46)
Yeah doing the SOHN is important but I understand the warranty issues which is why I waited until I got my last engine at 96,000.
I premix as well and honestly if this engine fails prematurely then I will rebuild and start all over but by then it will be a track/weekend only car so. But for now at 12k on this one, I am running the BHR Ignition, no cat, premixing my fuel with 2 stroke, running the SOHN with 2 stroke, I never drive over 3,000RPM on cold oil, I change my oil before 3,000 miles, and I keep my paper air filter as clean as a whistle.
I premix as well and honestly if this engine fails prematurely then I will rebuild and start all over but by then it will be a track/weekend only car so. But for now at 12k on this one, I am running the BHR Ignition, no cat, premixing my fuel with 2 stroke, running the SOHN with 2 stroke, I never drive over 3,000RPM on cold oil, I change my oil before 3,000 miles, and I keep my paper air filter as clean as a whistle.
I am just do for another change right now.
06-22-2010, 12:24 PM
#13
Registered
The biggest problem with S1 RX-8 engine reliability is with oil metering. A Sohn adapter or varying the amounts of injection won't change this. The center of the apex seals aren't getting proper lubrication. This is why the S2's have the 3rd center oil metering jet on the rotor housing.
06-22-2010, 03:37 PM
#14
^^^ Yup, which is why it really doesnt matter what kind of oil you use, granted as long as its not Hello Kitty oil you should be fine since your engine will fail eventually... S1 design fail...
I believe RotaryGod, we have had a good arguement with a friend over this before lol...
I believe RotaryGod, we have had a good arguement with a friend over this before lol...
06-22-2010, 04:19 PM
#15
Of course, that's why you premix! Hit the oil from two directions. If your engine fails after that, then your ignition is not firing properly. To make sure, get BHR ign, and you'll always know that whatever fuel is in the chamber will fire unless really lean which actually means not much hydrocarbon to make scratchy carbon.
06-22-2010, 04:40 PM
#18
Iraqi Freedom Veteran x2
Join Date: Sep 2005
Location: at work probably
Posts: 230
Likes: 0
Received 0 Likes
on
0 Posts
04-29-2015, 02:28 AM
#25
New Member
Join Date: Apr 2015
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts