Hello.

Right now my G is around 60k Miles. Ive been using 5w-30 Syn for about 15k miles now. But since ive reached 60K should i switch to a thicker weight such as 0w-40/10w40 ? i know the numbers in front are for winter weather. So what im looking at is the second numbers.

Thanks

 

i have 112k on my car and still run 5w-30 with no problems or loss of economy or power...

 

i'd stick w/ 5w-30 and reasonable change intervals unless you consistently drive at high rpm's. 0W-40 might be ok in your so-cal climate but I would'nt raise the cold viscosity.

 

In your location anything up to, and including, 20/50 will work just fine.

 

wats the general rule of thumb to kno when to up the weight? 90k?

 

I've never upped the weight on any of my cars yet. Never had any issues with blow-by or excessive oil burning in any of them either over the course of the past 17 years of driving.

 

would it increase any power in the engine or make it work better or no .

 

higher weight and viscosity will cause a loss in fuel economy...but miniscule

 

oooooooh thanks guys for all your helpful info and not flaming me ill just stick with 5w-30 then

 

no need to up the weight. I never have or will.

 

Newer cars don't need to change oils as they age. As mentioned change your oil and filter regularly and you'll be good well into the upper 100K mile range if not longer.

 

+1. I had a lexus with 190,xxx miles and never upped the weight, kept it at 5w30 with no problems.....