gl4 gear oil
Worth a lookShows a sweet-spot price point ($36.85 avg), but strong incumbent ratings (4.8★) keeps it on the watch list.
Avg price
Incredible$36.85avg listing price — sweet spot $15–$100
Price range
Great$10.80–$78.34cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.5%return rate — above 6% kills the launch gate
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Growth
Good+27.2%90-day search growth — must beat 0% to launch
Market size
Okay$274K$274K/yr · 114K searches
Review moat
Okay1,583.26avg incumbent reviews — the moat a new listing must climb
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Competition
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
12 rising
Sellers
129
Top-5 brand share
82%
Open market
15%
- Red Line34%
- Redline Oil19%
- Red Line Oil13%
- Triax9%
- Valvoline7%
- ULTRA 1PLUS4%
- Open — no brand owns it (6 brands, 15%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)
Red Line$42.154.9★5,032 rev
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart
Redline Oil$22.384.9★5,032 rev
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)
Red Line Oil$72.984.8★432 rev
TRIAX Synergy Gear MT 75W-90 GL-4 (MT-90); Full Synthetic Manual Trans Fluid; Smooth Shifting; No Sticking Slipping Vibration or Shudder; Yellow Metal Safe (1 Gallon)
Triax$42.054.8★348 rev
Red Line 50305 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Gallon
Red Line$78.344.9★5,032 rev
Newest
by launch date
SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission Transaxle & Limited Slip | 1 Gallon
ULTRA 1PLUS$36.96600 rev
Penn Grade 1 77296 Classic Multi-Purpose GL-4 Gear Oil SAE 80W-90 1 Quart (4 Pack)
PENN GRADE1$36.38158 rev
TRIAX Synergy Gear MT 75W-90 GL-4 (MT-90); Full Synthetic Manual Trans Fluid; Smooth Shifting; No Sticking Slipping Vibration or Shudder; Yellow Metal Safe (1 Gallon)
Triax$42.05348 rev
TRIAX Synergy Gear MT 75W-90 GL-4 (MT-90); Full Synthetic Manual Trans Fluid; Smooth Shifting; No Sticking Slipping Vibration or Shudder; Yellow Metal Safe (1 Quart)
Triax$14.90348 rev
Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 Quart Pouch
Valvoline$15.474,288 rev
Trending
90-day click momentum
Red Line 50604 MT-LV 70W/75W GL-4 High-Performance Full Synthetic Gear Oil Lubricant for Manual Transmissions & Transaxles - 1 Quart
Red Line$22.974.7★
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)
Red Line$76.764.8★
Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon
Lucas Oil$34.634.8★
VP Classic Gear Oil GL4 SAE 80W-90 1 Qt.
VP Racing$21.134.6★
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)
Red Line$42.154.9★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +27.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great Value”
“Excellent product”
“Excellent synthetic manual transmission gear oil”
“Easy to Use”
“As advertised”
“Works great smooth shifts”
“Silky smooth”
“Shifts pretty good”
“versatility very good buy again”
“Better, smoother, and longer lasting than anything on the market”
What buyers complain about
“leaky”
“Hard to find, not cheap”
“And I'm assuming that someone had added extra gear oil”
“It's not cheap”
“just wanted to point out that the listing apparently is incorrect”
“Containers are a little tricky to use if you have to use an extension hose”
“small opening”
“Smelly”
“Not much space wothout lifting thr car”
“Wrong weight”