vinuneuro

I have a 92 Prelude H23a with 56k miles on it. I just bought the car. I am considering switching the motor to synthetic oil. Would you recommend it? Will it harm the engine (i.e. seals!)? If it is a good idea, how do I switch over without harming the motor? If synthetic would be bad for my car, what oil would you use and what grade for summer and winter?

Thanks for the help.

Vitt1

I have a GSR, and switched over at about 85K and had no problems like leaks, etc. I stayed with synth for a while, then went to a semi-synth, because I didn't need to spend all that money. 5W30 for winter and 10W30 for summer.

vinuneuro

Do you not have to mix the oil a little in the beggining and gradually switch over?

Vitt1

I didn't do it and had no problems. Try a search, I believe many people with Hondas have switched and had no problems. Try this website for more info:
http://www.bobistheoilguy.com

tegbuilder

There is never a problem with switching from regular to synthetic with a motor that is in good shape.