synthetic or non synthetic oil
#1
Registered User
Thread Starter
iTrader: (4)
Join Date: Apr 2006
Location: washington
Posts: 194
Likes: 0
Received 0 Likes
on
0 Posts
synthetic or non synthetic oil
Dynosty built my motor and it has been running strong for about 10k miles now. Anyways, when i got my motor back from them i asked them what engine oil they recommended and they told me Castrol GTX 10w30 or 10w40, non synthetic oil. I asked them if i should switch to synthetic down the road and they told me they recommend the thicker oil for their built motors due to the build design and that i can run synthetic if i wish but they use exactly what they recommended on all their race cars.. Does anyone with built motor twin turbos run non synthetic oil? from what i read it seems like most people run synthetic oil on their builds? I have been running 10w30 mobil 1 synthetic oil but i kind of what to try something new. Any input?? thanks guys
#6
Registered User
iTrader: (8)
I use Mobil1 10w30 and 10w40. I also use Valvoline 10w30 and 10w40 synthetic. Conventional oil is commonly used because on applications because it is A) cheaper and changed more often for high hp applications b) often times helps with oil pressure c) doesn't interfere with PCV systems as much as synthetic does from my experience.
I run both to be honest, never had a problem. I usually run synthetic on the street, and conventional at the track since it's coming right out when I come home.
Djamps said it best, it's like @ssholes, everyone's got an opinion on it. I honestly would just follow what Hal and Dustin told you if they built your motor.
I run both to be honest, never had a problem. I usually run synthetic on the street, and conventional at the track since it's coming right out when I come home.
Djamps said it best, it's like @ssholes, everyone's got an opinion on it. I honestly would just follow what Hal and Dustin told you if they built your motor.
Trending Topics
#16
Registered User
iTrader: (2)
As always run what your builder recommends. I'm going to run gtx 10w-40 on my dynosty built motor. Or if you decide you want to run xxxxx brand, make sure you stick with that weight/brand for the rest of the motor's life.
If I remember correctly, Hal said they run GTX in all their cars. If it's good enough for them, it's definitely good enough for me.
What you should actually be concerned about is how often you change your oil. I'm planning on changing mine very often, but that's just me. Very much less than 1k miles, after ever 'racing condition', and sometimes before a 'racing condition', simply dependent on how oil stress tests show the oil to wear after a 'racing condition'. But my engine is pretty loose.
Imho with something like gtx you're looking at like 20 bucks give or take a change, you'd be a moron not to change it very frequently.
If I remember correctly, Hal said they run GTX in all their cars. If it's good enough for them, it's definitely good enough for me.
What you should actually be concerned about is how often you change your oil. I'm planning on changing mine very often, but that's just me. Very much less than 1k miles, after ever 'racing condition', and sometimes before a 'racing condition', simply dependent on how oil stress tests show the oil to wear after a 'racing condition'. But my engine is pretty loose.
Imho with something like gtx you're looking at like 20 bucks give or take a change, you'd be a moron not to change it very frequently.
#17
New Member
iTrader: (8)
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes
on
6 Posts
I've always ran shell rotella synthetic 5-40 in all my race bikes and now with my built engine. If it holds up in engines I spin to 19k rpms for 45 minute races at redline then it will do all I need in a car. So far no issues on my last block or this one with that oil (last engine lost a return oil line and I drove 14 hours home with less than a quart of oil in it and didn't spin a bearing FYI).
For break in never a synthetic but after that it's almost silly to invest that much in an engine and not use something that will reduce as much friction as possible.
#18
Registered User
Join Date: Jun 2008
Location: Tarpon Springs, FL
Posts: 205
Likes: 0
Received 0 Likes
on
0 Posts
Ok, so the saying originally goes "opinions are like @ssholes, everyone's got one." I don't think oil is like @ssholes, it certainly smells better. I think what you all meant was "opinions on oil is are like @ssholes, everyone's got one."
#19
Registered User
iTrader: (2)
Never said anything to me about GTX. I run a dynosty block now as well.
I've always ran shell rotella synthetic 5-40 in all my race bikes and now with my built engine. If it holds up in engines I spin to 19k rpms for 45 minute races at redline then it will do all I need in a car. So far no issues on my last block or this one with that oil (last engine lost a return oil line and I drove 14 hours home with less than a quart of oil in it and didn't spin a bearing FYI).
For break in never a synthetic but after that it's almost silly to invest that much in an engine and not use something that will reduce as much friction as possible.
I've always ran shell rotella synthetic 5-40 in all my race bikes and now with my built engine. If it holds up in engines I spin to 19k rpms for 45 minute races at redline then it will do all I need in a car. So far no issues on my last block or this one with that oil (last engine lost a return oil line and I drove 14 hours home with less than a quart of oil in it and didn't spin a bearing FYI).
For break in never a synthetic but after that it's almost silly to invest that much in an engine and not use something that will reduce as much friction as possible.
Most motor oils out there are good enough now a days. And to be honest the 'performance' differences between the good brands are basically negligible when you do oil changes often. I do however believe that sticking with one 'model' of oil for the life of the engine is the correct thing to do.
Last edited by Resmarted; 09-15-2012 at 03:06 AM.
#20
Here in Italy a lot of people use Mobil1 full synt (of course...) 5w-50.
Very good performance also on cold start, good in track days and normally quite low consumption...
EU made...
Use onyl full synt oil for a 350 please !
Very good performance also on cold start, good in track days and normally quite low consumption...
EU made...
Use onyl full synt oil for a 350 please !