lnguyenh

I use 5W-30 Mobil 1 while some others use 0W-40 ... which one do you use?

ATSOU

elf synthetic 5w-30
The same oil that help Renault to win F1 last year

350g

I typically use Royal Purple . . . worked well in my TT 350Z back in the day, so I keep using it

G

rominl

iTrader: (4)

mobil 1 for both my gs400 and sc430. and if i get the ls430 i would use that too

change oil every 3k miles, so just need nice but not the nicest stuff

socalJD

If you have short intervals (3k), isn't synthetic a lil' overkill. One of the main drawing pts of synthetic is the longer life for extended change intervals. At 3k, a very good dino oil like Castrol may suffice, especially in a V8 - a high revving, forced induction, modded motor may require synthetic all the time. I know oil type/change intervals is a highly subjective matter, but just curious as to why Mobil 1 every 3k ?

rominl

iTrader: (4)

not if i drive hard or do a lot of local driving

the way i see it, there is never too early to change oil, you use one day and the oil are old already. i agree there might be a point where things get diminishing return, but it's too hard to judge

at least financially i think it's ok so hopefully that's fine

KINGLS430

I typically use Mobil 1, however i am intrested in seeing if Royal purple creates any type of diffrence in preformance. I also use Z-MAX Engine treatments with evrey oil change. Any one notice any diffrences between Mobil and RP?

CG lover

Mobil 1 @ every 7,500

the Oil companies love those doing the 3K changes,,

since when has any engine failed under normal driving these days due to an oil related problem of going beyond the 3K,, with BMW and Mercedes heading toward the 15 and 20K oil change I would think that should prove they are not interested in any waranty claims due to lack of oil changes and related failures,,

times do change,,

blacksc400

iTrader: (4)

Mobil 1 5-30 all the way for all my cars.

BNR34

iTrader: (1)

The longest motor warranty on Benz/BMW is only 100k miles, with 15k~20k oil change interval, their motor is only good for 100k. Which is fine with zero warranty claim. But I want my motor to last 200k~500k miles.

Most maintance items don't make any differences for a modern cars under 100k miles, it is when you want to keep the car running beyond that, it makes the difference.

Go find a good running motor with 250k miles, I bet you the oil was changed every 3k.

Go find a blown motor with only 120k miles, I am sure the oil was changed every 20k.

It all depends on how long you want it to run. If you can afford to get a new car every 100k miles, then you don't have to change the oil.

bonafyd

iTrader: (6)

X2 I personally think it's the best.

KINGLS430

I love mobil one but am still curiosu about the Royal Purple i cant belive no on has used it in an LS and does anyone use any oil aditives?

blacksc400

iTrader: (4)

no additives for me, I heard somewhere that for newer Lexus cars, additives are just bad for them.
I can't remember where. But I just make sure I change my oil every 3000-4000 miles or 4 months.

I6turbo

iTrader: (1)

Yes. There is very little likelihood that you'd realize any difference in engine life in the scenario you described above (unless you run the engine to very high mileage). While synthetic oil is generally "better" people have drifted to the conventional wisdom belief that modern standard oil is somehow not good, but it just isn't true. Marketing and PR are powerful things. That said, I use synthetic in all my cars because I'm a sucker for the false feeling of security, and partly because I do believe it is a bit more forgiving on my two turbo cars. I do know this though -- if you are chosing between synthetic and long change intervals vs. regular and short change intervals, I'd choose the short change intervals. Definitely.

croatone

My preference would be 5w-30. I prefer a slightly thicker oil. Being in Virginia you are a colder climate than here in Houston though so ) weight is ok. A full synthetic gives me piece of mind. My brothers f150 ran kendall no name oil its entire life and has 185,000 miles and doesent burn oil yet. Engineers at my fathers oil company tell me keeping oil clean is more important than changing it. They run diesels on rigs for 10 years continuously on basic oil and change fluids only every few months.