Questions regarding our LSD and what fluid to use has come up quite frequent in the past year. We just want to provide users with information to help explain why OS-250R is important and why our LSD’s have a select few of approved fluids.
OS-250R
OS011-KA1
Most diffs take 2 quarts
Our differential is a Negative Preload Type LSD and thus our differential starts out with little to no locking until power aggressively applied. Because of this design it is critical that the right type of gear oil is used to ensure proper break-in and long term performance. If any incompatible oil or fluid mix (gear oil + LSD friction modifier) is used, the differential may not lock properly or may chatter and lock inconsistently.
OS GIKEN OS-250R gear fluid is a specially formulated synthetic gear oil that contains the proper amount of gear oil and limited slip additive for LSD protection and reliable locking performance for our RWD applications (currently, OS-250R is not recommended in transaxle applications). With that being said, we have had success using a select few non-OS fluids in regards to protection. Please see our current list below:
- Motul Gear Competition FF 75W140 – (FWD Transaxle, AWD, and RWD Applications)
- Motul 300 75W90 N/S – (FWD Transaxle, RWD)
- Swepco 210 – (Old Porsche 915/930 Gearbox Applications)
- Motocraft Synthetic Gear Oil 75W140 – (FWD, Transaxle Applications)
As we are constantly testing units with different fluids and will update this list as more come along. These are the select few over the years that have proven to work well in their given application.
If you have any questions, or have any particular oil you would like us to test, please feel free to contact us at your
earliest convenience!
Speedy Shipping and Professional Packaging
We are able offer many shipping options thanks to our long-term relationship with UPS FedEx DHL. Our warehouse staff are highly educated and will package the items according to our precise and exact specifications. Your products will be subjected to an exhaustive examination before they will be properly packaged prior to being delivered. We ship to thousands of customers every day from all over the world. The fact that we're committed to becoming the biggest online retailer in the World is obvious. We have distribution centers as well as warehouses located in Europe and in the USA.
Orders that contain more than 1 item are assigned processing periods according to each item.
Prior to shipment, all purchased items will be thoroughly inspected. The majority of orders are shipped within 48 hours. The delivery time is estimated to be between 3 and seven days.
Returns
Due to the multiple parties involved, including the factory and the warehouse, we cannot effectively manage inventory. The stock levels may fluctuate at any given time. It's possible that your order will become unfulfilled when you have placed the order.
Our policy is valid for 30 days. If you have passed 30 days in the past since you purchased and we are unable to offer you a refund or exchange.
Your item should be in the original packaging and not be used. The item must be in the original packaging.
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