The 2.8-liter Opel A28NET or LP9 engine was produced in Australia from 2008 to 2013 and was installed on charged versions of the Insignia and on the second generation Saab 9-5 under the B284L index. There was a modification of this turbo unit under the index A28NER, boosted to 325 hp and 435 Nm.
A-series family: A20NFT, A20NHT, A24XE, A28NET, A30XH.
Specifications
| Production years | 2008-2013 |
| Displacement, cc | 2792 |
| Fuel system | distributed injection |
| Power output, hp | 260 |
| Torque output, Nm | 350 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 89 |
| Piston stroke, mm | 74.8 |
| Compression ratio | 9.5 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on all shafts |
| Turbocharging | Mitsubishi TD04 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.3 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Opel Insignia 2010) — city — highway — combined |
16.9 7.4 10.9 |
| Engine lifespan, km | ~350 000 |
| Weight, kg | 215 |
The engine was installed on:
- Opel Insignia A (G09) in 2008 – 2013;
- Saab 9-5 II (YS3G) in 2010 – 2012 (as B284L).
Disadvantages of the A28NET engine
- This turbo engine overheats quickly, so keep an eye on the cooling system;
- Timing chains have a very modest resource, and their replacement will be quite expensive;
- It is very common for air to leak through the pipe from the air filter;
- The turbine is reliable here, but the wastegate membrane often bursts;
- The weak points of the unit include its control unit, vacuum and gasoline pump.
Frequently asked questions about the Opel A28NET
How much power does the Opel A28NET make?
The Opel A28NET develops 260 hp and 350 Nm of torque.
How much oil does the Opel A28NET take and which one?
Engine oil capacity: 6.3 liters. Recommended oil: 5W-30.
Does the Opel A28NET have a timing belt or chain?
The Opel A28NET uses a timing chain.
Is the Opel A28NET turbocharged?
Yes, the Opel A28NET is turbocharged (Mitsubishi TD04).
Does the Opel A28NET need valve clearance adjustment?
No, the Opel A28NET has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Opel A28NET last?
The typical lifespan of the Opel A28NET is ~350 000 km with proper maintenance.
What is the fuel consumption of the Opel A28NET?
Opel Insignia 2010: city 16.9, highway 7.4, combined 10.9 L/100 km.
What cars was the Opel A28NET installed on?
Opel Insignia A (G09) in 2008 - 2013; Saab 9-5 II (YS3G) in 2010 - 2012 (as B284L).
What are the common problems of the Opel A28NET?
This turbo engine overheats quickly, so keep an eye on the cooling system. Timing chains have a very modest resource, and their replacement will be quite expensive. All known problems.
