Hi, I'm looking to do a fill on my Honda S2000 (MY02)I was thinking of using Castrol GC 0w30 but I have also been looking at Castrol Edge 10w30. 10w30 is the recommended fill. I might be driving it for 5 more weeks and then it goes into storage for winter. Last winter I couldn't resist driving it on sunny dry days over the winter months, I did about 12 cold starts in dead of winter. I think this year I'll resist the urge and let it sit all winter and fire it up April 1. I'm thinking the Edge is a newer formulation with a better additive package over GC, but GC is a proven performer with a great base fluid. Any opinions on the two ?. Thanks for reading.
Is Castrol Edge 10w30 improved over GC 0w30
- Thread starter JSRT4
- Start date
- Status
I might add that I'm coming off a run with a 5w40 fill, and I'd like to see if I can lower my iron wear numbers into single digit levels if possible. Castrol GC is a thicker 30 weight compared to Castrol Edge, not far off the 5w40 I was running which was a thin 40 weight, if that has any effect on things ?. Thanks for reading.
Last edited:
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
Originally Posted By: demarpaint
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I thought about that but I'm committed to not starting it this winter. Maybe with the 5w30 I might be tempted to start it up, lol. Any opinions on Castrol GC vs. Edge ?
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I thought about that but I'm committed to not starting it this winter. Maybe with the 5w30 I might be tempted to start it up, lol. Any opinions on Castrol GC vs. Edge ?
Castrol Edge is a great oil. I use it in my Corvette, it has had a better UOA than Mobil 1. It is also quieter.
Some UOAs have not shown that it is NOT a true 15,000 mile OCI.
Some UOAs have not shown that it is NOT a true 15,000 mile OCI.
Originally Posted By: Corvette Owner
Castrol Edge is a great oil. I use it in my Corvette, it has had a better UOA than Mobil 1. It is also quieter.
Some UOAs have not shown that it is NOT a true 15,000 mile OCI.
Thanks for the reply on this, sounds like a good experience, I like that your engine ran quieter. I won't put more than 5000 miles on the oil in a season of driving, so long drain means nothing to me.
Thanks for the info !
Castrol Edge is a great oil. I use it in my Corvette, it has had a better UOA than Mobil 1. It is also quieter.
Some UOAs have not shown that it is NOT a true 15,000 mile OCI.
Thanks for the reply on this, sounds like a good experience, I like that your engine ran quieter. I won't put more than 5000 miles on the oil in a season of driving, so long drain means nothing to me.
Thanks for the info !
Synpower 10w-30. has a low Noack % and easily attainable.
Originally Posted By: garlicbreadman
Synpower 10w-30. has a low Noack % and easily attainable.
Are there any comparisons on Noack % numbers between the two ?, I'd be interested to know the difference.
Synpower 10w-30. has a low Noack % and easily attainable.
Are there any comparisons on Noack % numbers between the two ?, I'd be interested to know the difference.
Originally Posted By: demarpaint
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I agree.
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I agree.
Originally Posted By: CATERHAM
Originally Posted By: demarpaint
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I agree.
10W-30 is NOT too thick for the winter, particularly when Synthetic is involved.
How is Castrol Edge on leaks?
Originally Posted By: demarpaint
Why not try Edge 5W30? In the event you do decide to take it out on a cold sunny day you'll have the benefit of a 5W30 for that cold start vs the 10W30.
I agree.
10W-30 is NOT too thick for the winter, particularly when Synthetic is involved.
How is Castrol Edge on leaks?
Last edited:
Any oil thicker than necessary is too thick.
Originally Posted By: CATERHAM
Any oil thicker than necessary is too thick.
This. Absolutely nothing wrong with 5W-30
Any oil thicker than necessary is too thick.
This. Absolutely nothing wrong with 5W-30
Last edited:
Originally Posted By: Nick R
Originally Posted By: CATERHAM
Any oil thicker than necessary is too thick.
This. Absolutely nothing wrong with 5W-30
+1
Really though, 10W-30 will work identically.
How cold are you talking? it is under, oh, "20 degrees" go 5W-30, yea. Though you dont "need" to...
Originally Posted By: CATERHAM
Any oil thicker than necessary is too thick.
This. Absolutely nothing wrong with 5W-30
+1
Really though, 10W-30 will work identically.
How cold are you talking? it is under, oh, "20 degrees" go 5W-30, yea. Though you dont "need" to...
iirc, the previous run was on GC.
nice report there audi junkie. Looks good. I really don't need to debate the 5w30 vs. 10w30 choice as the car will be put to sleep well before freezing temps and when it wakes up in April it will be well above freezing. Operating temps would be between 10 degrees celsius and 30 degrees celsius in the 3 seasons that that car will be used.
Edge had a horrible and annoying commercial on TV.
But the oil is one of the best.
But the oil is one of the best.
Originally Posted By: mechtech2
Edge had a horrible and annoying commercial on TV.
But the oil is one of the best.
he,he, lol,forgot to mention you get a free baseball cap with every 4.4. litre jug (leftover stock from World Cup season).
Edge had a horrible and annoying commercial on TV.
But the oil is one of the best.
he,he, lol,forgot to mention you get a free baseball cap with every 4.4. litre jug (leftover stock from World Cup season).
Last edited:
Originally Posted By: JSRT4
nice report there audi junkie. Looks good. I really don't need to debate the 5w30 vs. 10w30 choice as the car will be put to sleep well before freezing temps and when it wakes up in April it will be well above freezing. Operating temps would be between 10 degrees celsius and 30 degrees celsius in the 3 seasons that that car will be used.
The main advantage of the 5W-30 vs 10W-30 has to do with it's higher viscosity index; 170 vs only 148 for the 10W-30 grade. With the better syn oils the 10W-30 grade is virtually obsolete in that it has no longer has any advantages over it's 5W-30 stable mate. Particularly in a high reving sportscar, the lower the start-up viscosity even at warm temp's the better.
That means you can rev the engine higher when cold and during the warming-up period before the oil pump goes into by-pass.
That's the reason I run a light 20wt oil in my Caterham. Even with such a light oil and very high VI oil it will still take at least 20 minutes for the oil to build up sufficient heat (thinning out) so that I can use maximum rev's without going the oil pump going into bypass.
It's the same reason Dr, A.E. Haas runs a 0W-20 and 0W-30 in his exotic sportscars and he lives in central Florida.
It's one of the reasons I like M1's resently reformulated AFE 0W-30; it's VI is 180.
nice report there audi junkie. Looks good. I really don't need to debate the 5w30 vs. 10w30 choice as the car will be put to sleep well before freezing temps and when it wakes up in April it will be well above freezing. Operating temps would be between 10 degrees celsius and 30 degrees celsius in the 3 seasons that that car will be used.
The main advantage of the 5W-30 vs 10W-30 has to do with it's higher viscosity index; 170 vs only 148 for the 10W-30 grade. With the better syn oils the 10W-30 grade is virtually obsolete in that it has no longer has any advantages over it's 5W-30 stable mate. Particularly in a high reving sportscar, the lower the start-up viscosity even at warm temp's the better.
That means you can rev the engine higher when cold and during the warming-up period before the oil pump goes into by-pass.
That's the reason I run a light 20wt oil in my Caterham. Even with such a light oil and very high VI oil it will still take at least 20 minutes for the oil to build up sufficient heat (thinning out) so that I can use maximum rev's without going the oil pump going into bypass.
It's the same reason Dr, A.E. Haas runs a 0W-20 and 0W-30 in his exotic sportscars and he lives in central Florida.
It's one of the reasons I like M1's resently reformulated AFE 0W-30; it's VI is 180.
Caterham, that is the best explanation I've ever heard about the two viscosities, that might convince me to go with a 5w30 over a 10w30 despite temps as oil flow on these engines is a big deal. I'll definitely consider it now.
Eventually I want to go back to Amsoil early next season when the car gets back on the road, I've been considering Amsoil 10w30 vs. Amsoil 0w30, I was going to go with 10w30 due to the lower Noack numbers but now I'll re-think that one too. Along that logic Castrol GC 0w30 might be a good choice too.
Thanks for that explanation, very helpful.
Eventually I want to go back to Amsoil early next season when the car gets back on the road, I've been considering Amsoil 10w30 vs. Amsoil 0w30, I was going to go with 10w30 due to the lower Noack numbers but now I'll re-think that one too. Along that logic Castrol GC 0w30 might be a good choice too.
Thanks for that explanation, very helpful.
Originally Posted By: JSRT4
Originally Posted By: garlicbreadman
Synpower 10w-30. has a low Noack % and easily attainable.
Are there any comparisons on Noack % numbers between the two ?, I'd be interested to know the difference.
https://bobistheoilguy.com/forums/posts/1968906/
scroll down until you see a list..
Originally Posted By: garlicbreadman
Synpower 10w-30. has a low Noack % and easily attainable.
Are there any comparisons on Noack % numbers between the two ?, I'd be interested to know the difference.
https://bobistheoilguy.com/forums/posts/1968906/
scroll down until you see a list..
- Status