Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil
1 Gallon
Price as of 2026-06-08. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$6–$23
- Mid-range:$23–$39← You are here
- Premium:$39+
Is This Right For You?
- •Budget-conscious shoppers — priced below 72% of Motor Oil
- •Those who want a top-rated option — in the top 19% of Motor Oil by rating
- •Risk-averse buyers — 11,955+ reviews give a highly reliable picture
- •Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor offers a better rating (4.9/5) at a similar or lower price ($22)
- •STP Premium Small Engine 4 Cycle Oil Formula — 40% cheaper at $14 (Score A)
- •Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor — higher rated at 4.9/5 ($22)
📊 Based on data analysis of 58 products in this category.
Mubboo Score: A+
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Motor Oil
Computed from live Amazon rating, review count, and price across 58 Motor Oil available to US consumers · last refreshed 2026-06-08.
How It Compares
This Product Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil | Most Popular Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor | Best Rated Liqui Moly 20226 Molygen New Generation 5W-30 Synthetic Motor | Best Value STP Premium Small Engine 4 Cycle Oil Formula | |
|---|---|---|---|---|
| Price | $23.46 | $19.97 | $22.22 | $13.99 |
| Rating | 4.8/5 | 4.8/5 | 4.9/5 | 4.8/5 |
| Reviews | 11,955 | 27,740 | 5,097 | 3,256 |
| Mubboo Score | A+ | A+ | A | A |
Quick Specs
- Size
- 1 Gallon
- Unit Count
- 128.0 Fluid Ounces
- Flash Point
- 435 Degrees Fahrenheit
- Item Weight
- 7.4 Pounds
- Manufacturer
- Shell Rotella
- Model Number
- 550045347
- Liquid Volume
- 3800 Milliliters
- Container Type
- Bottle
What People Say
Synthesized from 40 reviews · 100% verified purchases.
For older engines, high-mileage oils like Valvoline MaxLife can help reduce leaks and noise. Compare final cost as Amazon purchases may not qualify for manufacturer rebates, and note Castrol EDGE’s eco-pack can be harder to pour than jugs.
- Improved engine smoothness and quietness
- Good value and competitive price
- Dependable and reliable performance
- High mileage engine benefits
- Inconvenient eco-pack packaging
- No rebate eligibility on Amazon
Related Video Reviews
Key Features
- ✦Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
- ✦Improved wear performance with significantly increased level of protection against harmful engine wear (compared to previous generation API CJ-4 engine oils)
- ✦Enhanced fuel economy capability of 1.5% without compromising engine protection or durability (compared to 15W-40 oils)
- ✦Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants
- ✦Resists breakdown by heat to provide continuous protection throughout the service interval, and also provides improved low-temperature flow compared to conventional 15W-40 oils
Source: product listing on Amazon.
About Shell Rotella
- 6 products in our database
- Average rating: 4.8/5 across all products
- Price range: $15.98 – $1191.47
- Categories: Motor Oil
If not the T6 Full Synthetic 5W-40 Diesel Engine Oil, consider these
Bottom Line
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil earns Mubboo Score A+. Priced at $23 — a budget-friendly option, below the category average of $32. Rated 4.8/5 from 11,955+ reviews. Strong buy if: budget-conscious shoppers, those who want a top-rated option. Skip if: liqui moly 20226 molygen new generation 5w-30 synthetic motor offers a better rating (4.9/5) at — Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor (Score A+, $20) may fit better.
Frequently Asked Questions
Is the Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil worth buying in 2026?
It earns a Mubboo Score of A+, with a 4.8/5 rating from 11,955 reviews — better than 81% of Motor Oil we track.
How much does the Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil cost?
It is currently $23.46 — budget-tier pricing for Motor Oil.
How does the T6 Full Synthetic 5W-40 Diesel Engine Oil compare to other Motor Oil?
The category's most-reviewed alternative is the Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor (4.8/5, 27,740 reviews, $19.97). The T6 Full Synthetic 5W-40 Diesel Engine Oil carries a Mubboo Score of A+ vs A+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-08) and may change.