Recent Topics
'05 Scion Xa
by womcat
12/19/14 06:57 PM
1 year OCI - When to change?
by camrydriver111
12/19/14 06:32 PM
What Airtex, Autolite, Fram and Prestone all hav?
by chad8
12/19/14 06:12 PM
ODO fraud. What would you do about it?
by friendly_jacek
12/19/14 05:24 PM
Toyota 90915-YZZG1 Made in the USA
by Tmiller3063
12/19/14 04:17 PM
Mystery oil loss
by Mar57
12/19/14 04:05 PM
Brand new VW 2.0T- Castrol 0w40 ok?
by gijello
12/19/14 03:51 PM
An opinion please.
by hank55
12/19/14 03:50 PM
fixed the dreaded rust!
by Robertslowpoke
12/19/14 03:41 PM
Reading the dipstick on a GM 4.3l V6
by Sierra048
12/19/14 03:22 PM
Silk browser alternative
by possum328
12/19/14 01:53 PM
John Deer LA 105 Oil Recomendation
by AndySantoro
12/19/14 01:35 PM
Newest Members
AggiePreacher, novcz, SCFarmer, LumpOfCoal, carguymitch
52229 Registered Users
Who's Online
110 registered (01rangerxl, aa1986, 1034, 147_Grain, 2009Edge, 10 invisible), 1300 Guests and 218 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52229 Members
66 Forums
223667 Topics
3546627 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2339805 - 08/07/11 01:15 AM Supertech SYN 75W-90
sm00thpapa Offline


Registered: 07/09/11
Posts: 867
Loc: Spring Hill, FL
Is this a good synthetic gear oil for a 50K diff OCI?
_________________________
14 Elantra Factory fluids and filter
09 FZ6R, K&N 204, SRT 15W-40
04 Ascender, P1, Napa SYN 5W-30
96 Cavalier, PC, Maxlife 10W-30

Top
#2339865 - 08/07/11 07:44 AM Re: Supertech SYN 75W-90 [Re: sm00thpapa]
Billbert Offline


Registered: 10/09/09
Posts: 259
Loc: California
This change is done so rarely, why not use a top line lube such as Redline or Amsoil?
_________________________
If you think you can, or if you think you can't, You are probably right.

Auto Instructor / ASE Master Tech

Top
#2339936 - 08/07/11 10:08 AM Re: Supertech SYN 75W-90 [Re: sm00thpapa]
yaris0128 Offline


Registered: 07/10/10
Posts: 1219
Loc: Bellingham, WA
Why would you want to go 50k on an ST lube? I've heard a lot of people remark that it's great for a few thousand miles but loses its smoothness quick and your in the same spot you were in before. Its not worth what they want at $11 a quart. You can buy M1 and Valvoline gear oil for $8.99. Screw ST.
_________________________
07 Yaris 56k Valvoline White Bottle 5w20
95 del Sol 117k Pennz Ultra 5w20
94 Ninja ZX-6 74k Rotella T 15w40
12 KLX250S 5k Rotella T 15w40

Top
#2350585 - 08/18/11 07:19 PM Re: Supertech SYN 75W-90 [Re: sm00thpapa]
qdeezie Offline


Registered: 08/10/10
Posts: 870
Loc: Charlotte, NC
Here's my opinion that I posted on a different thread. Also, the ST 75w-90 is a blend unless they recently changed something.

Originally Posted By: qdeezie
For what it's worth, I used the ST semi synthetic 75w-90 and I wasn't impressed. I bought it to flush out my differential before upgrading to full syn and it did well for a couple of months and I thought I had a quality sleeper gear oil on my hands, but when I drained it (less than a year and 10k miles) it looked worse than the gear oil I drained out of my truck with an unknown history. Also, my engine didn't seem to have as much of a load on it when I drained the ST out and put in another gear oil.

I give a thumbs up to ST motor oil and ST coolant, but to their transmission fluid and gear oil, not so much. Maybe their full syn gear oil is better, but I'd rather use an AAP code or just pay the piper and get something that I'm not so skeptical about.

Also, I noticed that there is a Castrol Syntec full syn gear oil out there for a decent price if you're looking for a bargain. I'd definitely try that if they had it in the weight you're looking for.
_________________________
'90 F150 XLT Lariat | PU 5w-30 & RP Filter
'13 Hyundai Elantra Coupe SE | PU 5w-20 & OEM Filter
'03 Ford Focus ZX3 | VWB NG 5w-20 & OEM Filter

Top