- posted in Bolens Tractor Forum: I want to replace all the gear oil in my bolens G14, Tiller, and Mower. This GL-5 rated lube is extremely slippery, reducing wear and friction in hypoid and limited-slip differentials. O'Riellys ... ask for it by name, not for gear oil. Trying to change out the fluids on an old truck. Redline MT90 or Amsoil MTG can be used but you pay a little more for the best fluids. I have a Ford 8n which calls for the same oil as yours. The myths about it ruining syncros is pure BS, at least in my case. Long Life Synthetic Gear Lube 75W-90 Semi-Truck Gear Lube (FGR) 80W-140 Semi-Truck Gear Lube (FGO) Racing & Off Road. Apr 11, 2019 #6. Tarnold. Today I changed the oil in my '06 Toyota Matrix 5-speed at 21K miles. In the standards for lubricants, we would identify "equivalents" and "temporary" or "emergency" substitutes. GL4 and GL5 have additives that will destroy the "bronze" components in your hydraulic system. GL5 specification is for highly loaded hypoid differentials as fitted to most cars from 1960 onwards. So a 75W-140 gear oil has similar performance to an SAE 75 gear oil while at 0°C. If you're lucky, you might be able to find the Pennzoil 75w90 GL4 gear oil. Walmart, Autozone, and O'reilly only have GL-5 on the shelf. My 3038H book specifies "API GL4 ISO VG 46/68" for Hydro oil. Read the label: In order to choose a gear oil, you have to carefully read the back label.GL-4 is the recommended API rating (American Petroleum Institute) and SAE. Pennzoil Axle combines a premium performance gear oil additive package with a high quality synthetic base stock. "Thank you for contacting Red Line Oil, all of our lubricants are full synthetic, the MT-85 is a 75W85 GL-4 gear oil, I dont have a reference to that specific part number. I picked up the 5 gal bucket of 80-90 at walmart. The only OEM replacement gear oil for the NV 4500 I could find with a GL-4 rating. It is designed to be used with “yellow” metallurgy (brass, bronze, copper) and other ‘soft’ metals used in synchronizers, bushings, thrust washers and other components typically found in classic manual transmissions […] ... as usually all they have is GL5. The lubricant is sufficient for high speed, low speed and high-torque conditions. 75w90 Gl4 Gear Oil. While true, Lucas Trans and Diff Lube prevents many such issues from ever occurring. I use GM 80w90 GL4 gear oil. Gear Oil, ISO Viscosity Grade Not Specified, SAE Grade 75W-90, Base Oil Synthetic, Container Size 1 gal, NSF Rating Not Rated, Max. Lucas Synthetic Gear Oil. 4. Order Gear Oil - 75W-90 for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. I would just go buy EP90 GL-4 to be safe and not have to research further, but that is pretty hard to find in the states. It's a gearbox oil, just like others, but the ingredients are different. I'm not looking to buy Redline, Amsoil, or Royal Purple gear oil. Attach a funnel to one end and suspend it under the hood using a coat hanger. Messages: 15 Likes Received: 1. You can use either a gear lube pump ("Sta-Lube" makes one), or buy a few feet of 1/2" ID plastic tubing at Home Depot. Super Tech 75W-90 Syn-Blend Gear Oil, 1 Quart ... SuperTech 75W-140 Synthetic Gear Oil - Walmart.com But I ran with GM synchromesh trans fluid which is GL5 for 15 yrs and my GM syncros still looked new. GL-4 Gear Lube 75W-90 Gear Oil (MTG) Semi Truck. Fuels & Lubricants Discussion all about Fuels & Lubricants. Walmart Gear Oil 75 90. 260 Degrees C, Viscosity Index 140, Flash Point 205 Degrees C, Pour Point -54 Degrees C, Container Style Jug, Standards API GL-5 and MT-1; SAE J2360, Specific Gravity 0.859, AGMA Standard Not AGMA Rated, Item Gear Oil, Extreme Pressure Use Yes I use 85W90 GL-5 gear oil in gallon jugs from WalMart in axles. Gear oils can get remarkably close to performing almost uniformly across the spectrum, with grading like 75W-85 gear oil being fairly common. This shear-stable formula resists breakdown for extended periods and offers more consistent viscosity in warm and cold temperatures for less gear noise and improved shifting. No need for GL-4 in axles; GL-5 is better and much cheaper. GGS New Member. GL4 is the first serious level of EP performance and is specified for many gearboxes and final drives from mid 1930’s onwards. The owners manual calls for 75W-90 GL4 or GL5, so I used Valvoline 75W-90 GL5 oil. This item: Castrol 06674-6PK Syntrax Limited Slip 75W-90 Gear Oil - 1 Quart, (Pack of 6) 18 680,00 ₹ Ships from and sold by Cart2India SLP. It really needed changing as the oil was dark with a metallic sheen, and these trannys have had a number of early failures (60-100K mi.) Valvoline® High Performance Gear Oil is a thermally stable, extreme-pressure gear lubricant that withstands severe temperatures and shock loading while providing excellent anti-wear, anti-scuffing, rust and corrosion protection.