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Description
castrol 75w90 gear oil 75w90 Synthetic Gear / Differential / Transfer Case Oil – Westway OilsFully Synthetic 75w90 Gear Oil A modern high performance premium product manufactured from a blend of synthetic oil, sheer stable viscosity index improvers and a multipurpose extreme pressure additive package. It offers high levels of performance when compared to straight mineral oil whilst being compatible with mineral oils which enables it to be simply used as a replacement product on a drain and fill basis. This is a GL 4 and GL 5 Specification
Fully Synthetic 75w90 Gear Oil
A modern high performance premium product manufactured from a blend of synthetic oil, sheer stable viscosity index improvers and a multipurpose extreme pressure additive package.
It offers high levels of performance when compared to straight mineral oil whilst being compatible with mineral oils which enables it to be simply used as a replacement product on a drain and fill basis.
This is a GL-4 and GL-5 Specification synthetic gear oil meaning it is safe for use where yellow metals are present. It contains a buffered sulphur EP additive which helps protect yellow metals found in some gear boxes.
For use in high performance transmissions, spiral bevel axles, transfer boxes, reduction hubs, high load drive axles, hypoid axles and steering units. The use of this product will often smooth and improve manual gear changes in previously “notchy” gear boxes.
Not suitable for use in Limited Slip Differentials (LSD)
Product Specifications:
API: GL-4 & GL-5, MT-1
MAN: 342 S1 Scania STO: 1
ZF TE-ML 05B, 12B, 17B, 19C, 21B
BMW 33 01 96 (149)
Equivalent to Castrol SAF-XO
FORD WSD-M2C200-C
API: GL-4 & GL-5, MT-1
MAN: 342 S1 Scania STO: 1
ZF TE-ML 05B, 12B, 17B, 19C, 21B
BMW 33 01 96 (149)
Equivalent to Castrol SAF-XO
FORD WSD-M2C200-C
Yellow Metal Safe
Product Test Data:
Fluid Appearance: Yellow / Straw
Specific Gravity @ 15.6˚C : 0.870
Kinematic Viscosity @ 40˚C (cSt) : 96
Kinematic Viscosity @ 100˚C (cSt) : 14.9
Viscosity Index : 169
Flash Point (COC ˚C) : 195
Pour Point (˚C) : <-46
Product Test Data:
Fluid Appearance: Yellow / Straw
Specific Gravity @ 15.6˚C : 0.870
Kinematic Viscosity @ 40˚C (cSt) : 96
Kinematic Viscosity @ 100˚C (cSt) : 14.9
Viscosity Index : 169
Flash Point (COC ˚C) : 195
Pour Point (˚C) : <-46
The typical test data provided is taken from average values, there will be some variability in production and therefore do not constitute a specification.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 1082 reviews
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Product Reviews
★★★★★ 5
Amazing cream to restore cracked skin!!
Item Package Quantity: 1
Cracking of my feet is not the problem. This has been the only cream I found that restores my cuticles!! My right thumb constantly stays dry and ugly. The convenience of applying like a ChapStick is wonderful. and allows me to grab and apply frequently. My cuticle has finally become soft and pretty. :) (Highly recommend)
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Absolutely great. I’m a repeat buyer.
Absolutely LOVE this toner. My skin is slightly sensitive and this formula NEVER burns my face. Great exfoliation. No tightness or dry areas. Fantastic for the price and just as good or better than name brand or expensive toners. I’m a repeat buyer. Big bottle and lasts a while. I would highly recommend.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Hard to keep on the shelf
Yesyesyesyes
Imo it's the perfect male equivalent of a Honeypot wipe. It's also rock solid for drying out oily skin but to me it's kind of expensive to use it like that. Easily my favorite out of all the Thayers tonics. The serum is also really good for converting red patches into poppable pimples which then just leave, and the sulfur cream is just invaluable as a leave-on make-up/healing combo. Thayers is good stuff man. It's a billion times healthier than benzoyl peroxide or adapalene and even SA is pretty rough on the skin in therapeutic doses. Thayers does such a good job of balancing herbs and gentle chemicals to provide a uniquely safe yet effective remedy, across the board. The only thing that was a genuine flop from them for me was the rosewater tonic, which smelled like God.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Results!!
I have been using this product daily for just over two years. It’s one of those things that you just put into your daily routine and sort of forget about it.
I usually don’t expect to see a huge improvement with any product. I just use them hoping that I will maintain the status quo and that things won’t get too much worse. :)
This past Mother’s Day, I was with my sons and grandkids. I usually avoid letting them take my picture because these darn kids always seem to catch me with an unflattering look on my face. I’m pretty sure they do this on purpose. Anyway, I must not have had my guard up quite enough because when I got home, my phone alerted, and it was pictures, of me, taken incognito. 😎
I cautiously looked, and to my surprise I couldn’t believe how good the skin on my face looked!
I hurriedly scrolled back in my pictures on my phone to find a “before” picture from three years ago and I couldn’t believe my eyes. My skin looks so much better now than it did three years ago.
I wondered, how could this be? The only change that I made was adding this product to my routine a little over two years ago. There is an actual noticeable difference.
Now, I realize that my experience is nowhere near proof beyond all doubt, however, I’m not taking any chances. I will continue to use this product daily.
It’s relatively inexpensive and my results have been great.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Game changer!!
This stuff is amazing! I bought it because there was somewhat of a trend online saying glycolic acid is great for girls with sensitive skin. I’m inclined to agree because I have very dry, sensitive skin and this product works very well on my face and my legs (post shave). This is meant to lightly exfoliate the skin, so if you’ve just shaved your face or skin, a day later, this is great to put on to help prevent any irritation. Also, this is good for dry skin! When I have some dry patches on my face, I buff the dead skin off very gently but thoroughly. Then I use this toner to help prevent it from coming back. I was skeptical this would work because my skin is so extremely dry sometimes, but it really works! It was perfect for doing my makeup with. I use it every once in a while if I need any extra exfoliating. Do bear in mind, though, it smells really bad. I think it’s the witch hazel or something, but the product by itself smells quite gross. Definitely put lotion on a few minutes after it absorbs into the skin. This is a great product and I’m very happy with it. 10/10 when used wisely.
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Reviewed in the United States on August 19, 2025