I have been useing mobile1 synthetic oil in my car for about 4000 miles. Will it be ok to go back to regular oil?

 

should be fine.......I only use reg oil, synthetic seems just a waste of money to me with no obvious advantage in my personal use

 

i hear ppl say things on both sides of the synthetic oil... i dont know for a fact because i havnt dyno tested my own personal car but... i do notice my engine runs alot smoother with synthetic than with regular.. and feels a lil peppier... maybe in part to the smoother running.. i run mobile 1 full synthetic extended something with the syntec stuff i think it costs me 30 bucks for a 5qt. jug not to much more expensive that good regular oil.. especially since you can run the synthetic a little longer it prolly evens out on the $$$

personally i think at this point i like the synthetic.. never know tommorow my engine may fly apart and i may curse it but for now im sold

what im really wanting to do is put the full synthetic royal purple in my transmission... i hear tho that when doing so if u drain and fill your not truely getting all the fluid out so u will have a mixture of both.. whats the best safest way to drain all fluid from transmission and fill back up so there is no mixture

 

Its not a problem going back, just change your oil every 3k, if your running a race motor synthetic is probably a better way to go.

 

prolly drop the tranny fluid pan??

 

still got the converter and everything on top and inside the valve body..


one of those trans flushers.....but I would not waste my time, alsy I think the trans flush machines strain the pump and I will never use one. We have one in the shop and alot of trans take a dump shortly after using it

 

just change the trans fluid twice to remove almost all of the old fluid.make sure to drive the car around for a little while after the first fluid change.

 

lol i was afraid of that
that royal purple is expensive.. but if its the only way to get all the old fluid out what the hell