There are several advantages of having a gl4 oil. Let’s take you step by step, type by type, and find the best gl4 oil for you.

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Our Top Picks:

Best Overall: Buy: Red Line Gl4 Oil READ REVIEW

Best For Peace Of Mind: Buy: Liqui Moly Gl4 Oil READ REVIEW

Best For Rear Differential: Buy: Crc Gl4 Oil READ REVIEW

Best For Diff: Buy: Motul Gl4 Oil READ REVIEW

Best For Right Price: Buy: Sta-Lube Gl4 Oil READ REVIEW

Best For Good Value: Buy: Ultra 1Plus Gl4 Oil READ REVIEW

Best For High Performance: Buy: Maxima Gl4 Oil READ REVIEW

Suitable For Brass: Buy: Millers Oils Gl4 Oil READ REVIEW

Best Overall: Red Line Gl4 Oil

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If you want nothing but the best long-standing oil, then Red Line Gl4 Oil is the one you should definitely consider, as it manages to bring a lot to the table. The red line gl4 oil is made for good stuff, allows for more fluid shifts and it is great with smooth shifts. Make sure this fits by entering your model number. Moreover, it worked perfectly, is made with excellent quality and it shifts smoothly.

The oil is next, is single and I have no complaints. Lastly, the red line gl4 oil feels good and it is highly recommend.

Almost all customers opine that the oil is good for daily driving. Also, a few strongly agree that oil is available for a similar price. And, a few also found that the oil is great on the 2005 toyota corolla. To sum up, buyers found this to be one of the best oils for daily purposes.

• This can be used on 2003 Nissan maxima 3.5 manual tranns.
• This allows for smoother shifting and it is great for quick shipping.
• This is a night and day difference.
• This is starting to feel more notchy and tough to get into gear.

Best For Peace Of Mind: Liqui Moly Gl4 Oil

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Liqui Moly has been making great oil for years, thanks to a combination of clever design and appropriate materials. The Liqui Moly Gl4 Oil is suitable for use where there are long periods between oil changes. The manufacturer says: Our problem-solvers lengthen the service life of motors and aggregates and ensure their excellent performance and proper function for many years to come. The low viscosity characteristics of this gear oil make it also suitable where shifting difficulties exist.

The oil is a fully synthetic, top grade, high-pressure gear oil for high load manual, auxiliary, transaxle and hypoid transmissions, where a lubricant complying with api gl 4+ is required. Most importantly, the liqui moly gl4 oil works great and it works great.

Most buyers opine that the oil is suitable for use with ls systems. Also, they strongly agree that oil is a good substitute for the oem gm expensive fluid for the transfer case. In addition, they also found that this gear oil is always some of the highest rated on the market. In short, the tone of buyers is very positive and we believe that oil suits the purpose.

• Excellent wear protection, high rust and corrosion protection.
• This is great in newer units.
• This does the job and it is good for premium quality.
• This is made from raw material deliveries, to production, right through to shipment.

Best For Rear Differential: Crc Gl4 Oil

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate oil. The Crc Gl4 Oil is exactly that - it's a simple oil that hits all the right notes. The crc gl4 oil is not corrosive to copper, bronze, or other non-ferrous alloy bearings and bushings. Make sure this fits by entering your model number. Further, this is great for a great price and it does the job.

The oil is far less noisy and it is great for transfer cases. Above all, the crc gl4 oil has been tried many times and it is made for good stuff.

Almost all buyers quickly discovered that the oil is the correct gear lube for certain older transmissions and transaxles. And, they strongly agree that oil is the recommended oil for all older manual transmissions. And, they also found that this is gl-4 oil, which is required in many older manual transmissions. Consequently, customers were eager to recommend it to friends and would-be buyers.

• This is needed for old transmissions and it is soft.
• This was great in 1990 toyota truck.
• This is the perfect oil for an earlier model VW trans axle.
• This has no measurement window on it.

Best For Diff: Motul Gl4 Oil

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The Motul Gl4 Oil should be able to handle its purposes and duties with ease. The motul gl4 oil has tried many, is much more and it allows for smooth shifting. Make sure this fits by entering your model number. And, the oil is made for good stuff and it works great. Above all, the motul gl4oil is next, is much smoother and it is highly recommend.

Most customers agree that oil is a great replacement fluid for the zn6 platform. And, they strongly agree that the oil is made for racing and has higher boiling points than standard oils and fluids. And, they strongly agree that the oil is great for the Subaru WRX 5spd transmission and diff. Overall, buyers found this to be one of the best oils for daily purposes.

• This is a very popular fluid for manual trans that works well.
• This is also very good for differentials.
• This is great for pouring into the transmission without removing the intercooler.
• This works for filling the diff.

Best For Right Price: Sta-Lube Gl4 Oil

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The Sta-Lube Gl4 Oil is suitable and reliable and fits well with your regular use. The sta-lube gl4 oil is much smoother and it is made for good stuff. Manufacturer says: Our professional-grade gear lubricant can be removed with a degreaser or parts cleaner, and is widely used for auto, truck, and bus standard transmissions and differentials. This multi - purpose oil is suitable in use for auto, truck, and bus standard transmissions, and differentials requiring api / gl-3 and gl-4 oils that are 85w90 grade.

Above all, the sta-lube gl4 oil is black and it works great.

Almost all buyers agree that the oil is great in older gear boxes requiring the older gl-4 rated oil. And, a few also found that the oil is perfect for early model transmission. And, a few strongly agree that the oil is safe to use on yellow-gear gearboxes. Therefore, customers were eager to recommend it to friends and families.

• This is great in old muncie transmissions.
• It is easy to pour into tight spots.
• This is not corrosive to copper, bronze, or other non-ferrous alloy bearings and bushings.
• This can be used in a late 70’s super t-10 4 speed.

Best For Good Value: Ultra 1Plus Gl4 Oil

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The Ultra 1Plus line of oil comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Ultra 1Plus Gl4 Oil is a perfect fit and it has bearing life. 90 synthetic gear oil, api gl-4 is highly shear stable while also resisting rust, oxidation, foaming, and varnish. In addition, the oil maintains film strength for reliable lubrication.

Lastly, the ultra 1plus gl4 oil is formulated with synthetic base oils and specialty performance additives to provide improved high-temperature thermal and oxidative stability in a wide range of operating conditions.

"90 and it is not leaking and you have done your regular maintenance, you should not have any issues. " - says, one customer. Therefore, most buyers call the oil functionally comfort, and no one questions it.

• ✅ contribution to reduced maintenance costs and longer equipment life.
• ✅ extended gear and bearing life due to minimal deposits.
• This is made for good value and it has reduced maintenance costs.

Best For High Performance: Maxima Gl4 Oil

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The maximum gl4oil is capable of outshining several other oils featured in this list in overall features for the price point. Make sure this fits by entering your model number. 80w90 premium gear oil is a petroleum blend for today's high - performance shaft driven motorcycle. In short, with a 4.8 rating and more than 432 buyers, the maximum gl4 oil stands as the best choice.

• Use where api gl4 or gl5 gear lubricants are called for.
• For motorcycles with hypoid/shaft drive gears.
• Use in all motorcycle applications with separate clutch/transmission fluids.
• Special high shear strength polymers provide long - lasting protection on all gear surfaces.

Suitable For Brass: Millers Oils Gl4 Oil

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Not everyone likes to purchase oil for their regular usage, but the miller oils gl4 oil would be an anomoly. Moreover, this is engineered for gearboxes and differentials requiring EP lubricant and is also suitable for rear axles not requiring hypoid oils. Make sure this fits by entering your model number. Finally, the miller oils gl4 oil provides performance meeting or exceeding gl4, mil-l-2105.

• An extreme pressure gear oil using 80w90 mineral based gear oil with performance additives.
• Suitable for brass and bronze: non-stain.
• Bevel and lightly loaded hypoid gears.