in my '06 GS300, what is the standard oil used?

 

I used whatever lexus provided for the 1st free change, since then I only use mobile 1-it's the best in my opinion

 

I meant what weight/viscosity I use mobile 1 synthetic exclusively as well.

 

Factory fill since May '06 is 5w-20. Prior to that it was 5w-30. (There's a TSIB on this). The 5 lexus dealers near me still use 5w-30 for oil changes . . .

 

Cool deal, thanks.

 

so does the new gen GS require synthetic oil?

 

I'm pretty sure it does. Most newer cars do.

 

No it does not require synthetic oil, GF what most new cars are you referring to ???

 

Well coming from Mercedes, most new Benz I know of run on Mobil 1 Synth... and I put that stuff in my Audi as well... so again, I simply assumed that was the way everybody rolled now...

 

i had the exact same question when i switched from BMW to Lexus. BMW uses Castro Sync.

I've always wondered by Lexus doesn't use synthetic from factory.

 

^ Japanese cars are engineered to be more maintenance-friendly than their german counterparts. The only Japanese car I can think of that REQUIRES synth oil is the Acura Rdx (due to it's intercooled turbo). Let's not start another Holy War on the virtues of synth vs dino oil, this topic is purely subjective and everyone has an opinion. As for me, I'd rather have the choice rather than have the Mfr tell me what type of oil I must run . . .

 

Mobil 1 for my C6 & STI

 

No it doesn't as with any production Lexus model. They all use conventional motor oil.

 

Most Toyota/Lexus engines that have run 100, 200, 300,000 miles and more with no type of overhaul but regular scheduled maintenance have run without the use of synthetics.

 

True!!!

In 1991 we bought a Toyota truck for our company, till now the only thing we have done to it was oil change and spark plugs replacement.

Now it has over 400,000 miles on it and still running like new!!!

But for my own toys, I only use Mobil 1 on them!!!