Engine code

Vehicles using AJ126 engine list:

Which cars use the AJ126 engine and what oil to use. Common AJ126 engine faults, symptoms, diagnosis, prevention and repair.

Recommended oil for engine AJ126 engine.

Ask AI about any Engine code
Questions strictly about engine codes (brand/model/engine type/production years).
Oil Specs Comparison
Castrol EDGE 0W-40 A3/B4
Castrol EDGE 0W-40 A3/B4
ACEA A3/B4 βœ”
API SP βœ”
BMW Longlife-01 βœ”
MB 229.5 βœ”
Porsche A40 βœ”
Renault RN0700/0710 βœ”
VW 502 00/505 00 βœ”
Ford WSS-M2C937-A βœ”
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Motul 8100 X-Max 0W-40
Motul 8100 X-Max 0W-40
ACEA A3/B4 βœ”
API SP βœ”
BMW Longlife-01 βœ”
MB 229.5 βœ”
Porsche A40 βœ”
VW 502 00 / 505 00 βœ”
Renault RN0700/0710 βœ”
Ford WSS-M2C937-A βœ”
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Total Quartz 9000 Energy 0W-40
Total Quartz 9000 Energy 0W-40
ACEA A3/B4 βœ”
API SP βœ”
BMW Longlife-01 βœ”
MB 229.5 βœ”
Porsche A40 βœ”
VW 502 00 / 505 00 βœ”
Renault RN0700/0710 βœ”
Ford WSS-M2C937-A βœ”
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Petronas Syntium 7000 0W-40
Petronas Syntium 7000 0W-40
ACEA A3/B4 βœ”
API SP βœ”
BMW Longlife-01 βœ”
MB 229.5 βœ”
Porsche A40 βœ”
VW 502 00 / 505 00 βœ”
Renault RN0700/0710 βœ”
Ford WSS-M2C937-A βœ”
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Oil specification key
βœ” – Meets the required specification
❓ – Not explicitly stated (use caution; check your vehicle manual)
❌ – Does not meet required specification. Use may cause engine issues.
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Answer generated by AI.

Oil specifications for AJ126 engine

SAE 5W-30
ACEA C3
API SN
BMW Longlife-01
VW 504.00
VW 507.00

Most common problems, symptoms & fixes for the AJ126 engine.

Engine AJ126 commonly faces issues such as supercharger belt wear, carbon buildup on intake valves, and occasional oil leaks around the valve cover gasket. For diagnosis, listen for unusual supercharger whine or check engine codes related to boost pressure. Preventive maintenance includes regular oil changes with manufacturer-recommended synthetic oil, timely replacement of the supercharger drive belt, and use of high-quality fuel to minimize carbon deposits. Solutions involve cleaning intake valves via walnut blasting if carbon buildup occurs, replacing worn belts promptly, and resealing gaskets to fix leaks. Regular inspections and adherence to service intervals ensure optimal performance and longevity of the AJ126 engine.