QUOTE(jamespaul @ Jan 16 2020, 07:34 AM)
The question is how often are you expected to do:
Item 1: Every 5 years or 90,000km?
Item 2: Every 180,000 km?
Item 3: I dont think this is required anymore? in today's engines, if one uses synthetics?
Item 4: Once every 10,000 km?
if you want to have new car feeling
1. my engine is direct injection, NA
i seen other ppl same car as mine open up at 30,000km already caked up with carbon at intake valves.
If you have turbo or frequently pedal hard your carbon build up will be more as gas escape through PCV.
Suggest to add oil catch can after you do chemical/walnut blast.
to maintain it just spray throttle body cleaner everytime service at 10,000km.
- mine do the same as above, but i spray at smaller interval (5,000km), just small amount because just want to maintain good throttle response. now i use threebond foam
maybe sensors got dirty, at 5,000km engine will only pull if i step hard.
2. fuel filter better every 100,000km replace it.
3. no matter synthetics or not will build sludge, just takes how long only.
maybe once a year flush will do.
4. once a year will do, if added oil catch can and got spray little throttle body cleaning foam
This post has been edited by AllnGap: Jan 16 2020, 08:09 AM