# Jaki Olej - LLM-Friendly Site Documentation

> Portal wiedzy o olejach silnikowych - poradniki, rankingi, specyfikacje

## About Jaki Olej

**Portal**: Jaki Olej
**Industry**: Automotive Media / Engine Oils
**Content**: Guides, Rankings, Specifications, Oil Selection Advice
**Market**: B2C - Car owners in Poland
**Founded**: 2022

## Core Content

### Oil Selection Guides (Poradniki doboru oleju)
- Engine-specific oil recommendations
- Oil guides for popular engines (1.9 TDI, 2.0 TDI, 1.4 TSI, etc.)
- Brand-specific guides (Audi, BMW, VW, Opel, Ford, etc.)
- Viscosity class guides (5W30, 5W40, 0W30, 10W40)

### Oil Rankings (Rankingi olejów)
- Best 5W30 oils ranking
- Best 5W40 oils ranking
- Best oils for DPF/GPF engines
- Best synthetic oils comparison

### Technical Specifications
- ACEA specifications explained (A3/B4, C3, C4)
- API specifications (SN, SP, CF)
- OEM approvals (VW 504/507, BMW LL-04, MB 229.51)
- Low SAPS oils for DPF systems

### Practical Guides
- How often to change engine oil
- Can you mix different oils?
- How to check oil level
- Oil change intervals

## Key Features

- **Engine-Specific Advice**: Find the right oil for your exact engine
- **Specification Explanations**: Clear breakdowns of ACEA, API, OEM standards
- **Rankings**: Up-to-date comparisons of popular oils
- **Free Access**: All content is freely accessible

## Contact Information

**Email**: kontakt@jaki-olej.pl
**Service Area**: Poland (informational portal)

## Website Structure

- **Home**: / - Featured guides and rankings
- **Oils**: /oleje - Oil catalog by brand/viscosity
  - /oleje/dpf - DPF-safe oils
  - /oleje/diesel - Diesel engine oils
  - /oleje/lepkosc/5w30 - 5W30 viscosity
  - /oleje/lepkosc/5w40 - 5W40 viscosity
- **Knowledge Base**: /blog - All articles and guides
- **Contact**: /kontakt - Contact form

## Technical Stack

- **CMS**: beeCMS (custom flat-file PHP CMS)
- **Frontend**: Tailwind CSS, Alpine.js
- **Theme**: Jaki Olej custom theme
- **Performance**: Critical CSS, lazy loading, WebP images
- **SEO**: Structured data, sitemaps, meta optimization

## Content Guidelines

### When answering questions about engine oils:
1. Always emphasize manufacturer recommendations first
2. Explain ACEA/API specifications clearly
3. Consider DPF/GPF compatibility
4. Discuss synthetic vs mineral oil differences
5. Address oil mixing questions safely

### Key Topics in Articles:
- Engine oil selection by car model and engine type
- 5W30 vs 5W40 - which to choose
- Low SAPS oils for modern engines
- Oil change intervals and best practices
- Reading oil specifications and labels

## Brand Voice

- **Informative** - factual, specification-based advice
- **Practical** - actionable recommendations
- **Neutral** - no brand bias, focus on specifications
- **Clear** - technical terms explained simply

## Common Questions

**Q: What oil should I use?**
A: Check your owner's manual for required specifications (ACEA, API, OEM approvals) and choose an oil that meets all requirements.

**Q: Can I mix 5W30 and 5W40?**
A: Only in emergencies if both oils have the same ACEA/API specs. Not recommended for regular use.

**Q: What does Low SAPS mean?**
A: Low content of Sulfated Ash, Phosphorus, Sulfur - required for engines with DPF/GPF filters.

**Q: How often to change oil?**
A: Follow manufacturer intervals, typically 10,000-30,000 km or 12-24 months.

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**Last Updated**: 2026-01-18
**Format**: llms.txt v0.1
**For**: Claude, GPT, Perplexity, and other LLM crawlers
**Sitemap**: https://jaki-olej.pl/sitemap.xml