The Highlander In signature just experienced a huge oil loss of over 2Q over a 7.5K OCI. The vehicle has had synthetic all throughout on a 7.5K 5W30 OCI.
Usual oil loss was 1Q over the OCI but this was dramatic loss and concerning too.
Recent changes have been HM synthetic 15K miles ago and the PCV ic cleaned every 30K miles. Also last oil change added 8oz of Seafoam to the engine oil.
Any thoughts/suggestions
Usual oil loss was 1Q over the OCI but this was dramatic loss and concerning too.
Recent changes have been HM synthetic 15K miles ago and the PCV ic cleaned every 30K miles. Also last oil change added 8oz of Seafoam to the engine oil.
Any thoughts/suggestions