I have a 2004 MaximaSL. I have always used conventional motor oil. Since this type is getting harder t find. My question is should I go with synthetic? I know for a fact when our fleet went with synthetic new oil leaks have appeared. Will I also have the same thing happen to mine? The Maxima runs just fine and not looking to jinx myself.

 

Youll be fine. these cars only have 4 common leak points (upper oil pan seals, both valve covers, and oil cooler o-ring) none of which switching to synthetic would have an affect on. these parts leak simply due to age and hardening of the seals.

 

Already sold that car….but

Used synthetic blend for years….. then one crazy weekend decided to use the leftover conventional then switch back later ( you reversing my process ).

By end of day the rear main seals started leaking oil bad….. shop said $3k fix. Locale store stop leak resolved was about $15

go fish….

 

in 25 years of being in a shop ive never heard of transmission join up seals. you have a rear main seal (that almost never leaks on a VQ) and the upper oil pan end seals (that get hard and crack. always assumed to be a rear main leak)

 

rear main seal. Thanks for your 25 years+

 

I also got tired of searching around for my favorite brand and weight oil and filters so I order it from Amazon. Screw the brick and mortor stores if they want to play games! In case you're wondering I like Valvoline oil and WIX filters.