Hi friends,
I’ve thoroughly searched here and on the internet, and I remain perplexed with where my oil is going.
- 1994 FZJ80
- 194k miles
- Uses one quart of oil every ~800 miles
- HG replaced by Toyota as PM at approximately 125k miles. Valve guides not done at that time. Never been done.
- No smoke on cold start
- No smoke on warm start
- No smoke when taking off fully warmed up after idling for a while
- No smoke under full throttle acceleration, including transmission kick down and up shift
- No smoke under steady load
- Timing cover oil leak — 1-2 drops on the ground/week
- PCV valve, hose and grommet just changed; old valve was fine
- Throttle body is clean
- Use Amsoil 10w 40 synthetic and Toyota 90915-20004 filter
- Plugs look good
- Valve cover hasn’t been off since HG change; doesn’t leak, miraculously
- Original cats, still seem fine
- Runs great, always has during the 11.5 years I’ve owned it
- Whatever it needs, it gets
I’m sure I’m missing some information that’s helpful to form an opinion, so please let me know what I’m missing. I don’t want to replace rings or valve stem seals if they’re not the root cause. Thank you all for your thoughts, questions, suggestions.
I’ve thoroughly searched here and on the internet, and I remain perplexed with where my oil is going.
- 1994 FZJ80
- 194k miles
- Uses one quart of oil every ~800 miles
- HG replaced by Toyota as PM at approximately 125k miles. Valve guides not done at that time. Never been done.
- No smoke on cold start
- No smoke on warm start
- No smoke when taking off fully warmed up after idling for a while
- No smoke under full throttle acceleration, including transmission kick down and up shift
- No smoke under steady load
- Timing cover oil leak — 1-2 drops on the ground/week
- PCV valve, hose and grommet just changed; old valve was fine
- Throttle body is clean
- Use Amsoil 10w 40 synthetic and Toyota 90915-20004 filter
- Plugs look good
- Valve cover hasn’t been off since HG change; doesn’t leak, miraculously
- Original cats, still seem fine
- Runs great, always has during the 11.5 years I’ve owned it
- Whatever it needs, it gets
I’m sure I’m missing some information that’s helpful to form an opinion, so please let me know what I’m missing. I don’t want to replace rings or valve stem seals if they’re not the root cause. Thank you all for your thoughts, questions, suggestions.