5w40 Full Synthetic Oil
MaybeAn estimated 0.7% of orders come back. But the products selling today already average 4.8★, so 5w40 Full Synthetic Oil is a Maybe.
- Flapen Score
- 50 / 100Top 44% of 7,287 Automotive niches · +1 vs the category median of 4950
- Market size
- $747K/yr414K searches / yr
- 90-day growth
- +6.4%search demand this quarter
- Competition
- 60%top-5 click share · 7 brands · 102 sellers
Flapen Score
5w40 Full Synthetic Oil against its category
The dotted line is the Automotive average. Past it, 5w40 Full Synthetic Oil is stronger. Inside it, weaker.
Market
The 5w40 Full Synthetic Oil market on Amazon at a glance
Shoppers on Amazon United States searched for 5w40 Full Synthetic Oil 414K times last year and spent an estimated $747K. The top 5 brands take 95% of clicks. Flapen scores it 50 out of 100, a Maybe.
01 · Demand
An estimated 4.5% of those searches ended in a purchase.
Shoppers searched for this 414K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.5% of those searches ended in a purchase. Searches in the last 90 days moved +6.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $747K a year.
- Searches, last 12 months
- 414K
- Growth, 90 days vs prior 90
- +6.4%
- Conversion, latest week
- 4.5%
- Market size, estimated
- $747Ka year
- Peak month
- May1.2× the quietest month
- Top search term
- 5w40 full synthetic oil124K searches a year
02 · Price
A sale here is worth $39.77.
Listings sell for $39.77 on average, from $9.56 to $78.69. Amazon reports units sold in ranges. This niche sold 25K to 30K a year. The average listing sells 1,250 to 1,500 of them. At $39.77 that is $50K to $60K a year per listing.
- Average price
- $39.77inside the $15 to $100 sweet spot
- Price range
- $9.56–$78.69
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 25K–30K
- Units per listing a year
- 1,250–1,500
- Revenue per listing a year
- $50K–$60K
- Returns
- 0.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
65% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #52 within Oils & Fluids. It carries 4,073 reviews at 4.82 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 65%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #52in Oils & Fluids
- Average rating
- 4.82 starsAmazon United States average 4.42 stars
- Average reviews
- 4,073per listing
- Listings tracked
- 17
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 86 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 86 months
Products
Top 5w40 Full Synthetic Oil products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
- Price
- $30.17
- Rating
- 4.8/5
- Reviews
- 3,011
- Age
- 6y ago

Mobil 1 European Car Formula Full Synthetic Motor Oil 0W-40 5 Quart
- Price
- $26.03
- Rating
- 4.8/5
- Reviews
- 5,168
- Age
- 13y ago

Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
- Price
- $23.54
- Rating
- 4.8/5
- Reviews
- 12,007
- Age
- 9y ago

LIQUI MOLY Molygen New Generation 5W40 | 5 L | Fully synthetic engine oil | SKU: 20232 | 1 Pack
- Price
- $48.91
- Rating
- 4.9/5
- Reviews
- 5,170
- Age
- 8y ago

Castrol Edge Euro 0W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts
- Price
- $26.53
- Rating
- 4.8/5
- Reviews
- 3,337
- Age
- 12y ago
Trending
estimated 90-day click momentum
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
- Price
- $23.54
- Rating
- 4.8/5
- Reviews
- 12,007
- Age
- 9y ago

Castrol EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts Pack of 3
- Price
- $78.69
- Rating
- 4.8/5
- Reviews
- 1,899
- Age
- 4y ago

Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 1 QT
- Price
- $9.56
- Rating
- 4.8/5
- Reviews
- 3,011
- Age
- 13y ago

Castrol EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil 5 Quarts
- Price
- $26.16
- Rating
- 4.8/5
- Reviews
- 6,829
- Age
- 10y ago

Liqui Moly 2331 Leichtlauf High Tech 5W-40 Engine Oil - 1 Liter
- Price
- $14.55
- Rating
- 4.8/5
- Reviews
- 4,354
- Age
- 12y ago
Newest
by launch date
Mobil 1 European Car Formula Full Synthetic 5w-40 (6 Quarts)
- Price
- $51.78
- Rating
- 4.8/5
- Reviews
- 170
- Age
- 3y ago

Castrol EDGE Euro 5W-40 A3/B4 Advanced Full Synthetic Motor Oil 5 Quarts Pack of 3
- Price
- $78.69
- Rating
- 4.8/5
- Reviews
- 1,899
- Age
- 4y ago

MOTUL 8100 X-Cess Gen 2 SAE 5W40 Full Synthetic Motor Engine Oil 5 Liter Bottle
- Price
- $51.22
- Rating
- 4.9/5
- Reviews
- 2,240
- Age
- 6y ago

Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
- Price
- $30.17
- Rating
- 4.8/5
- Reviews
- 3,011
- Age
- 6y ago

Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil 1 Quart (6 Pack)
- Price
- $45.53
- Rating
- 4.9/5
- Reviews
- 1,264
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 60% of clicks. Leaders hold, but buyers still shop past them.
Brands
7 falling
Sellers
102
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
60%
Top 20: 100%
Open market
2%
- Valvoline34%
- Mobil18%
- Castrol17%
- Shell Rotella13%
- Liqui Moly13%
- Pennzoil3%
- Open — no brand owns it (1 brand, 2%)
Demand
5w40 Full Synthetic Oil search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.2×
Search terms
Top 5w40 Full Synthetic Oil search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 5w40 full synthetic oil124K/yr
- 5w4057K/yr
- 5w-40 full synthetic oil43K/yr
- 5w-4027K/yr
- 5w 40 full synthetic motor oil29K/yr
- castrol edge euro 5w-4010K/yr
- 5w40 european synthetic motor oil14K/yr
- castrol edge 5w4017K/yr
- 5w40 oil10K/yr
- 5w 408K/yr
Reviews and returns
What reviews say buyers love and hate about 5w40 Full Synthetic Oil
We read the reviews and the return reasons for every product selling here.
“They leak due to no seal”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 5w40 Full Synthetic Oil questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









