Sea Foam vs STP:Which is more popular by branded search?
In August 2026, STP had more branded searches than Sea Foam among engine oil additive brands worldwide. STP was estimated to have 368K branded searches compared to Sea Foam’s 140, and held a 69.7% Share of Search versus Sea Foam’s 0.03%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Sea Foam or STP?
Compare the engine oil additive brands people buy. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for STP, Sea Foam. The figures are in the table below the chart.
View monthly share of search table
| Month | STP | Wynn's | Lucas Oil | Redex | Bar's Leaks | Sea Foam |
|---|---|---|---|---|---|---|
| Oct 2025 | 71.9% | 14.5% | 6.5% | 6.5% | 0.7% | 0.03% |
| Nov 2025 | 68.7% | 16.9% | 7.6% | 6.2% | 0.67% | 0.03% |
| Dec 2025 | 67% | 20% | 7.4% | 4.9% | 0.66% | 0.04% |
| Jan 2026 | 71.4% | 17.5% | 5.3% | 5.3% | 0.57% | 0.03% |
| Feb 2026 | 70.4% | 17.3% | 6.3% | 5.2% | 0.69% | 0.03% |
| Mar 2026 | 68.6% | 16.9% | 7.5% | 6.2% | 0.82% | 0.03% |
| Apr 2026 | 73.5% | 14.8% | 6.6% | 4.4% | 0.59% | 0.03% |
| May 2026 | 74.4% | 15% | 5.5% | 4.5% | 0.6% | 0.03% |
| Jun 2026 | 72.8% | 14.6% | 6.6% | 5.4% | 0.57% | 0.03% |
| Jul 2026 | 71.2% | 17.5% | 5.2% | 5.2% | 0.7% | 0.04% |
| Aug 2026 | 69.7% | 17.1% | 6.3% | 6.3% | 0.55% | 0.03% |
| Sep 2026 | — | — | — | — | — | — |
How has the Sea Foam and STP comparison changed over the last 12 months?
3 findings
- STP was ahead of Sea Foam in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, Sea Foam’s estimated Share of Search among engine oil additive brands worldwide held steady at 0.03%, and its estimated monthly branded searches moved from 170 to 140.
- Across the 11 months ending August 2026, STP’s estimated Share of Search among engine oil additive brands worldwide moved from 71.9% to 69.7%, and its estimated monthly branded searches moved from 450K to 368K.
How did search popularity change for engine oil additive brands worldwide in August 2026?
2 changes
In August 2026, STP lost estimated Share of Search among engine oil additive brands worldwide, from 71.2% to 69.7%.
Estimated monthly branded searches for Sea Foam worldwide fell 17.6% over 11 measured months, from 170 to 140 in August 2026.
How each brand is measured
Brandwave collects information about searches that people make online using Sea Foam’s and STP’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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