Supertech vs GTX vs GC

[Shaman]

Trying to figure out what i want to run after the Auto-RX cycle is done. I have been using GTX 10w30, but i am reading good things about Supertech Synthetic blend and Full synthetic, and reading great things about GC.

Supertech synthetic blend is $7.80 for the 5 qt. bottle, GTX is $9.20 and GC would be about $27. Just wondering if GC would be worth the extra $20, and how much longer i could push the GC than a syn blend or Full Synthetic from Walmart or GTX.

LC and FP will be used.

 

[wn1998]

What car, engine, current mileage, driving habits (short trips?) I have seen that most that use GC are pushing the oil to the 9-15k range. I would think that 15k is quite attainable with German Castrol, Lube Control and a filter change at 10k.

 

[Shaman]

The engine is a SC 3800, most miles are highway miles, with some hard driving, but only for seconds at a time, and always when the engine is warm. Car is a college car. Trips to the grocery store and church, with most miles going to Grandma's house and home. I drive like a grandma 90% of the time because i hate the sound of the exhaust.

An oversized purolator filter will also be used on the car

 

[Shaman]

Anyone?

 

[dropitby]

Sounds like a middle of the road type may suit your needs Castrol Syntec Blend.

 

[Gene K]

I think I would give the new Mobil Driveclean SM/GF-4 10w30 a shot if it is indeed all Group III as reported by Carpy (SuperTech "Synthetic" is Group III) - See "Post from Carpy-RePosted here". It is reported it will continue to sell at the current prices of the old primarily Group I oil.

The Motorcraft Group II+/III Blend 5w30 might be good choice also at $1.42-1.44 Qt for winter. The new 10w30 Blend should be out by spring.

Gene

 

[Shaman]

Can both of these be found at Walmart

 

[Gene K]

Both available at my local Walmart...

However the new HM/GF-4 version of the Mobil DC isn't out yet.

Motorcraft 5w30 Synthetic Blend is. Although I am not sure if they are allowed to use the HM label yet.

Gene

 

[MustangGT]

Use the supertech and see how it goes, maybe you'll keep the car 20 years and put 500,000 miles on it, I seriously doubt anybody here will keep their car long enough to really need anything better than the cheapest SL (SM) oil, and the rest of the car will rust away first anyways.

 

[Shaman]

quote:

---

Originally posted by Gene K:
I think I would give the new Mobil Driveclean SM/GF-4 10w30 a shot if it is indeed all Group III as reported by Carpy (SuperTech "Synthetic" is Group III) - See "Post from Carpy-RePosted here". It is reported it will continue to sell at the current prices of the old primarily Group I oil.

The Motorcraft Group II+/III Blend 5w30 might be good choice also at $1.42-1.44 Qt for winter. The new 10w30 Blend should be out by spring.

Gene

---

I was planning on running a 5w30 for the winter, then switching to a 10w30 in spring. I still don't understand the Supertech Synthetic stuff, don't understand what exactly was going on in the thread

 

[Gene K]

Due to a decision awhile back Castrol was allowed to market Group III (Severally Hydrocracked Petroleum Oils) as Synthetic.

Over the last several years pretty much all the mainstream manufactures have swithched to a Group III Base for their Synthetic Oils. Mobil 1 being the obvious exception (Group IV/V).

A over symplification (There also certain viscosity index requirements they must meet):
Group I - Solvent Dewaxed Petroleum Base Stock
Group II - Severe Dewaxing or Hydrocracked
Group II+ - Moderate Hydrocracking
Group III - Severe Hydrocracked Petroleum or Slack Wax Feed Stock (Only recently allowed to be marketed as synthetic).
Group IV (PAO) - Isomerization of Feedstocks that are byproducts of petroleam production. (The traditional definiton of synthetic).
Group V (POE) - Esters from non-petroleum sources. such as Castor Bean Oil (Also considered synthetic).

What I/we were trying to point out was there are some cheaper oils out there that are better choices. MotorCraft is a Group II+ / III Blend that has a more sophisticated add package than either SuperTech Blend Group I / III or SuperTech "Synthetic" Group III and better base stock than the SuperTech Blend for less money. On the other hand if the "New" GF-4/SM version of Mobil DriveClean does turn out to be all low-end Group III as reported at $1.08 Qt it would likely be equivelent to the SuperTech "Synthetic" for lots less money.

For the dollar its hard to beat the Motorcraft 5w30 Synthetic Blend at the present moment. It cost $1.42 Qt at my local Walmart. It is produced by Conoco/Phillips a major producer of Group II+/III Basestocks with a new expensive form of Moly normally seen in Synthetics and some high dollar organics that can't be seen in conventional oil analysis. The Ford test WSS-M2C-929A is a double length tests that requires the oil to have twice the endurance required for API certification. I would look for a 5w30 that passes this test. MC 5w30 Blend does...

Just my opinion, that and a buck will buy you a cheap cup of coffee.

Gene

 

[BeltwayBandit]

Gene K,

I saw some Mobil Drive Clean SM/GF-4 as an Advance Auto yesterday. I don't remember whether it was 5W-20 or 5w30. It said NEW on the front label.

My local Wal-Mart had one bottle of Motorcraft 5w30 SM oil yesterday.

The oil companies can say that the oil meets the SM specs, but they cannot use the API donut until November 30th.

Good luck all in your hunts for these oils.

 

[Shaman]

quote:

---

Originally posted by Gene K:
Due to a decision awhile back Castrol was allowed to market Group III (Severally Hydrocracked Petroleum Oils) as Synthetic.

Over the last several years pretty much all the mainstream manufactures have swithched to a Group III Base for their Synthetic Oils. Mobil 1 being the obvious exception (Group IV/V).

A over symplification (There also certain viscosity index requirements they must meet):
Group I - Solvent Dewaxed Petroleum Base Stock
Group II - Severe Dewaxing or Hydrocracked
Group II+ - Moderate Hydrocracking
Group III - Severe Hydrocracked Petroleum or Slack Wax Feed Stock (Only recently allowed to be marketed as synthetic).
Group IV (PAO) - Isomerization of Feedstocks that are byproducts of petroleam production. (The traditional definiton of synthetic).
Group V (POE) - Esters from non-petroleum sources. such as Castor Bean Oil (Also considered synthetic).

What I/we were trying to point out was there are some cheaper oils out there that are better choices. MotorCraft is a Group II+ / III Blend that has a more sophisticated add package than either SuperTech Blend Group I / III or SuperTech "Synthetic" Group III and better base stock than the SuperTech Blend for less money. On the other hand if the "New" GF-4/SM version of Mobil DriveClean does turn out to be all low-end Group III as reported at $1.08 Qt it would likely be equivelent to the SuperTech "Synthetic" for lots less money.

For the dollar its hard to beat the Motorcraft 5w30 Synthetic Blend at the present moment. It cost $1.42 Qt at my local Walmart. It is produced by Conoco/Phillips a major producer of Group II+/III Basestocks with a new expensive form of Moly normally seen in Synthetics and some high dollar organics that can't be seen in conventional oil analysis. The Ford test WSS-M2C-929A is a double length tests that requires the oil to have twice the endurance required for API certification. I would look for a 5w30 that passes this test. MC 5w30 Blend does...

Just my opinion, that and a buck will buy you a cheap cup of coffee.

Gene

---

Thank you Gene, if i ever meet you i will buy you that cup of coffee. That was the info i was looking for. I was reading good stuff about MC 5w30, just couldn't make heads or tails of all of the jargon

 

[Shaman]

I found synthetic blend Motorcraft 5w30 for $1.41. $7.05 ain't bad for a fill up. Noticed that it was SM and API certified.