5w40 full synthetic oil
Worth a lookShows low returns (0.7%), but strong incumbent ratings (4.8★) keeps it on the watch list.
Returns
Incredible0.7%return rate — above 6% kills the launch gate
Avg price
Incredible$39.77avg listing price — sweet spot $15–$100
Price range
Great$9.56–$78.69cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$747K$747K/yr · 414K searches
Conversion
Good4.5%search→purchase rate — share of searches ending in a sale
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Growth
Okay+6.4%90-day search growth — must beat 0% to launch
Review moat
Bad4,072.59avg incumbent reviews — the moat a new listing must climb
Brand share
Bad95%top-5 brand share — brand-locked demand
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Competition
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
7 falling
Sellers
102
Top-5 brand share
95%
Open market
2%
- Valvoline34%
- Mobil18%
- Castrol17%
- Shell Rotella13%
- Liqui Moly13%
- Pennzoil3%
- Open — no brand owns it (1 brand, 2%)
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 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
Valvoline$30.174.8★3,011 rev
Mobil 1 European Car Formula Full Synthetic Motor Oil 0W-40 5 Quart
Mobil$26.034.8★5,168 rev
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
Shell Rotella$23.544.8★12,007 rev
LIQUI MOLY Molygen New Generation 5W40 | 5 L | Fully synthetic engine oil | SKU: 20232 | 1 Pack
Liqui Moly$48.914.9★5,170 rev
Castrol Edge Euro 0W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts
Castrol$26.534.8★3,337 rev
Newest
by launch date
Mobil 1 European Car Formula Full Synthetic 5w-40 (6 Quarts)
Mobil$51.78170 rev
Castrol EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts Pack of 3
Castrol$78.691,899 rev
MOTUL 8100 X-Cess Gen 2 SAE 5W40 Full Synthetic Motor Engine Oil 5 Liter Bottle
Motul$51.222,240 rev
Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
Valvoline$30.173,011 rev
Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil 1 Quart (6 Pack)
Pennzoil$45.531,264 rev
Trending
90-day click momentumShell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
Shell Rotella$23.544.8★
Castrol EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts Pack of 3
Castrol$78.694.8★
Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 1 QT
Valvoline$9.564.8★
Castrol EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil 5 Quarts
Castrol$26.164.8★
Liqui Moly 2331 Leichtlauf High Tech 5W-40 Engine Oil - 1 Liter
Liqui Moly$14.554.8★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +6.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.2×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“The best oil”
“worth it”
“Great High Quality Oil”
“increased fuel mileage”
“As advertised”
“Helps extend the engines life”
“Valvoline Oil Works Well”
“No clatter or struggle”
“Auto Union approved”
“no leakage just routine change”
What buyers complain about
“They leak due to no seal”
“Was a lot cheaper then tacking to the dealer”
“Received 5 quarts of USED motor oil”
“I think the viscosity is not as good as the caster oil”
“These bad reviews are pretty ridiculous”
“Picture is deceiving”
“they can blow up your engine”
“small quantities for truck”
“green oil color seems unconventional”
“Read the full print”