A few interesting observations while doing an oil change today.
Firstly, for the first time, I decided not to fill my oil filter. When the car started, the oil pressure light went off a second or two after all the other lights but then there was a high pitched sound which lasted at least 10 seconds and then stopped. I never noticed this sound after prior oil changes and it didn't happen the next time I started the car.
Apart from the possibility of it being (empty) oil filter related, could it have been a transmission related noise? I did a dipstick suck and fill for the transmission fluid and the car was on ramps so at an angle. The sound was like air being squeezed out which might apply to either lubricating system.
Secondly, when lubricating the oil filter gasket, I got some oil on the thread area and decided to clean it off because I actually torque the oil filter and the rule for torquing is that threads should be dry and free of oil / grease.
It was interesting that some dirt / dust seemed to come off the filter threads after rubbing the oil off them. I think cleaning oil filter threads is a worthwhile step for the anal retentive!
Lastly, I put in Castrol synblend and my immediate impressions after a short test drive are favorable although I cannot rule out the transmission fluid as the real reason.
Firstly, for the first time, I decided not to fill my oil filter. When the car started, the oil pressure light went off a second or two after all the other lights but then there was a high pitched sound which lasted at least 10 seconds and then stopped. I never noticed this sound after prior oil changes and it didn't happen the next time I started the car.
Apart from the possibility of it being (empty) oil filter related, could it have been a transmission related noise? I did a dipstick suck and fill for the transmission fluid and the car was on ramps so at an angle. The sound was like air being squeezed out which might apply to either lubricating system.
Secondly, when lubricating the oil filter gasket, I got some oil on the thread area and decided to clean it off because I actually torque the oil filter and the rule for torquing is that threads should be dry and free of oil / grease.
It was interesting that some dirt / dust seemed to come off the filter threads after rubbing the oil off them. I think cleaning oil filter threads is a worthwhile step for the anal retentive!
Lastly, I put in Castrol synblend and my immediate impressions after a short test drive are favorable although I cannot rule out the transmission fluid as the real reason.