I have about 195k miles on my car and currently I'm using the Mobil 7500mi oil. It's a synthetic blend (not fully synthetic) and I use the Nissan OEM oil filter. I change my oil every 7500 miles and I'm thinking that my car's getting old so should I switch to thicker oil? Can anyone just tell me which oil I should be using? And its grade? Thanks

 

What weight oil are you using right now? If you're not seeing any leaks with Mobil7500 then I'd stick with it.

 

i'm using 10w-40 and no oil leaks.

 

If the car does not use oil between changes and does not leak, stay with what you are currently using.

Changing oil can over time cause issues due to the different additive packages in each type. High mileage oils have seal conditioners in them for instance.

A thicker oil would only rob HP and MPG (slightly) for you at this point.

 

okay thanks. so if the oil starts to leak then I should switch to the thicker oils?

 

Use AutoRX to rejuvenate the seals, clean the combustion chamber and ring packs and minimize the risk of leaks or solve a leak problem. See www.auto-rx.com and join www.bobistheoilguy.com and run a search of AutoRX in the Additives Forum.

 

It seems like you are doing just fine, as long as you are consistent with your oil changes and don't go too long without changing....

 

Auto-Rx isnt a bad idea, and yea just keep going with what works...

 

what is this auto rx i use synthetic oil and i m at 180xxx