echelon

I'll have to look at Costco next time I'm over there. I have two vehicles that take almost 7qt's of oil and I'm going to run Synthetic in both so the best deal would help me greatly. The GS300 does take 7qt's doesn't it? I haven't changed it myself yet the first one was done by the dealer, I didn't feel like doing it in the cold.

arnieosp

iTrader: (1)

Sounds about right.

NealM

it holds 6.5 qts

dranhle

I don't plan keep my car long enough to notice the difference anyway(if there are any). Regular oil for my GS.

can'tdrv55

Is it a bad idea to switch back and forth between conventional and synthetic? Some of the dealers don't provide synthetic oil changes.

And has anyone tried synthetic blend?

GangsterGS

Once you go synthetic, you shouldn't or can't go back to conventional oil. My dealer uses Mobil1 synthetic blend.

maying856

iTrader: (31)

Mobil 1 syn ftw.

dlieu8989

5w30 Mobil 1 Synthetic. Thinking about running 0w20 Toyota Synthetic since it's free or 5w20 Mobil 1 if I can find it.

can'tdrv55

What is the reason behind that? I had to switch back and forth a couple of times. Am I doing damage to my engine?

lexusgs408

Synthetic oil: Mobile 1 always.............

LexFather

Someone can add more detail but basically the synthetic is not as thick and it technically "bonds" to your engine parts. Conventional oil is thicker.

I have read everyone about oil from all sides. To me it seems you are okay to switch back and forth UNLESS you have an older/high mileage vehicle where you do not want to use/switch to synthetic unless you have always used it.

Once you change the oil every 5k or so, you will be fine. As the engine gets older, I would recommend sticking to either synthetic or conventional.

I am a huge fan of Castrol and haven't had any issues with it in any Lexus and I've done my own oil changes in them for over 10 years. I have also used Pennzoil and Mobil one.

With the 450h, I haven't decided what I will use yet but I'm leaning toward synthetic.

nriepma

I use Mobil 1 fully synthetic as well, now if the dealership would just use the oil I give them instead of forgetting, ugh.

raptl1985

I use Mobil 1 fully synthetic 5w-30...asked the dealer...they also use that

rominl

iTrader: (4)

that i am very surprised. all the dealerships i go to they don't use synthetic unless customers request at extra cost

frotiss

Rominl where can I get the lexus sticker for the caliper on the 07-GS350 thanks