Power steering recall / service history
Interior damage from air con leaks in cabin and door seals
If SS
- 6.0 engine is sensitive to lubrication so check oil and filter change interval and type of oil used
- Test LSD function of stock diff (wears out quick)
If SV6
- Timing chain noise / longevity depends on lubrication history
- Signs of poor engine oil quality / sludge in PCV lines