brucelee

iTrader: (3)

I know this topic has been touched on before, but I cant make up my mind on what oil to run in my 99 Z28 that I just picked up. The previous owner had been running synthetic blend with good results. Im trying to decide If I should go to mobil 1 synthetic, or what I should use. Any imput would be great.

Steve

Mr Incredible

Google, the search button, and BITOG is your friend.

baldwintpenguin

Search, you might just be being lazy, HOWEVER to be fair there have been times when I needed info fast and did not have time to sit and read through forums so in my research for my 98 TA I have found that Mobil 1 Fully Synthetic 5-w30 is the best, doesnt thin out too much like Purple Royal, but to each his own. Good Luck

jamesSS

yep, get the moblie 1. they had a poll on here awhile back about motor oil and moblie 1 i believe was in the lead, then came that german 0w30 stuff. im switching to moblie on my first oil change (just got the car a month ago).

BriancWS6

iTrader: (18)

It's been discussed in many threads that Mobil 1 5w30 is TOO THIN for our cars. Its almost a 20wt. The viscosities of choice for Mobil 1 is 0w40 and 5w40.

brucelee

iTrader: (3)

This is why I made a new thread because I have read good and bad about the mobil 1. Should I go with the Mobil 1 5w-40 or just another 5w-30?

angel71rs

It's not that M1 is bad, just that the 30 might be a little thin. I've used the M1 Truck & SUV 5w-40 (now marketed as Turbo Diesel) and GC 0w-30 (now marketed as European Formula). Both very good oils, no noise or oil use with either one.

RPM WS6

iTrader: (3)

I like M1 0W40 or 5W40 for the LS1.

Try a seach on this topic, you will find many hours worth of reading.

Emerald Phoenix

iTrader: (2)

Where can you buy Mobile 1 0w40 or 5w40? Also, which is better for a daily driver?

RPM WS6

iTrader: (3)

AutoZone has the M1 0W40. There is a local chain in my area called Murray's that has the M1 5W40.

jond99

iTrader: (1)

ALL OIL THREADS

brucelee

iTrader: (3)

If you dont like the thread then there is no need for you to waste your time posting in it...the topic was clear

BriancWS6

iTrader: (18)

These guys have pointed you in the right direction. 0w40 is what I am currently using. Once I confirm that the 5w40 is still the same formula as before, only labeled differently, I will go back to using it. Either one is a good choice outta the Mobil 1 line.

styoung

iTrader: (4)

i use conventional 10w-30 in my 02 z28.

brucelee

iTrader: (3)

Thanks for the help I think im going to go with the M1 5w40

angel71rs

I saw plenty of both M1 Turbodiesel 5w-40 and GC 0w-30 European Formula at my local AZ Sunday morning.

Infamous

Strange no one has mentioned Amsoil. I've always heard they're the best.

tatman

can i use castrol gt-1 full syn?

angel71rs

It's a good oil, but you usually can't just drive down to local parts store and pick it up. You have to get it thru a dealer or sign up with Amsoil as a dealer... and pay $ for shipping. Why bother when GC or the right M1 synth is just as good for our engines... maybe better.


Sure you can, but why pay synth price for "synth" that really isn't? AFAIK GC is the only true synth sold by Castrol. Might as well get the GC or one of the M1 40s, true made from scratch synthetics, not highly refined dino juice.

Mr Incredible

Simply put, if you have a stock LS1 you could run any 0w-30/5w-30/10w-30. You could use any 0w-40/5w-40/15w-40. They will all work and not kill your engine within 100k miles.

Cheap. Expensive. Yellow bottle. Green bottle. Silver bottle. Blue bottle. On sale. Not on sale. It don't matter if you change your oil at 3-4k miles.

If you beat it hard, buy one on the thicker side of 30w.

Any other discussion that doesn't include proof of effectiveness like an oil analysis result is just an opinion.