Red Line MT-90 75W-90 GL-4 Manual Transmission Gear Oil - 5 Gallon

Red Line MT-90 75W-90 GL-4 Manual Transmission Gear Oil - 5 Gallon

Red Line SKU: RED50306
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Red Line MT-90 is a fully synthetic 75W-90 GL-4 manual transmission and transaxle oil, a thicker grade of MTL, with a friction balance tuned for smooth synchro engagement and durable protection in higher-load gearboxes. Recommended for GL-1, GL-3 and GL-4 applications and most special synchromesh-fluid specs; not for hypoid differentials. Supplied in a 5-gallon pail.

Specifications

Viscosity (SAE) 75W-90
Type Fully synthetic, manual transmission
Approvals API GL-4 (also GL-1/GL-3; not for hypoid diffs)
Size 5 Gallon
Part Number 50306

Shipping

  • Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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