- Joined
- Feb 27, 2019
- Messages
- 631
I have a WRX with an FA20DIT motor. Direct injection turbo only (no port injectors unlike the FA20 variant shared with the GT86).
- I'm at 22K miles.
- Oil changed every 3,750 miles with 5W30 Castrol Edge Titanium Synthetic (SN+, D1G2).
- Fram Ultra or WIX XP oil filter
- New engine air filter every 10K miles
- Top tier fuel only, 91 min always, sometimes filled with 93/94.
I'm wondering if it's worth using CRC as a way to slow carbon build up on the intake valves.
I'm not worried about the price but I don't want to cause any harm to my engine, where it's causing misfires or lean conditions, and ultimately engine damage. Nor do I want coating, varnish or any kind of residue left over.
The engine doesn't have any issues so I'd only be doing it as preventative maintenance. But perhaps it's better to just do a walnut blasting when the vehicle gets up in mileage and/or problems arise?
What would you guys recommend?
- I'm at 22K miles.
- Oil changed every 3,750 miles with 5W30 Castrol Edge Titanium Synthetic (SN+, D1G2).
- Fram Ultra or WIX XP oil filter
- New engine air filter every 10K miles
- Top tier fuel only, 91 min always, sometimes filled with 93/94.
I'm wondering if it's worth using CRC as a way to slow carbon build up on the intake valves.
I'm not worried about the price but I don't want to cause any harm to my engine, where it's causing misfires or lean conditions, and ultimately engine damage. Nor do I want coating, varnish or any kind of residue left over.
The engine doesn't have any issues so I'd only be doing it as preventative maintenance. But perhaps it's better to just do a walnut blasting when the vehicle gets up in mileage and/or problems arise?
What would you guys recommend?