What is the best synthetic oil? Best oil filter? - Page 9

Caddyscat · #**121** (**permalink**) 09-26-09, 05:14 PM

AMsoil, AMway, whatever..... I just don't think it's right waiting to change your oil for 20k miles with Amsoil. All you gotta do is change your oil every 3-5k. These engines are just LS-A's and are very durable and cheap. I saw someone mention amsoil purchasers are also sellers. I had a guy at work try and pimp his amsoil at me. He asked me what I use (Mobil-1) and instantly gave me the "oh- you don't wanna use that crap on your engine". Sounded like such a salesman. I asked him if he works the kiosk at the car shows and if he had a job to do (at work). "no thanks" I said. (GTFOH)

On a side note,

I tried the Mobil-1 site, and cant seem to find the part number for the filter on our cars. I don't wanna go to the dealer for Delco and I don't wanna use Fram either. Looking to use either Mobil-1 or K&N.

Also, those of you that have already changed your diff oil, do i need to replace the gasket? What do I torque the cover bolts to? and how much oil do I need with additive?

Thank you,

Edward

Looney100 · #**122** (**permalink**) 09-26-09, 07:15 PM

NEVER do extended drains with ANY oil unless its combined with used oil analysis. True, synthetics will typically last longer than conventionals, but if any oil gets contaminated (with coolant, fuel dilution, etc.) it may fail.

SlvrBullIT · #**123** (**permalink**) 09-27-09, 12:11 AM

Quote:

Originally Posted by Caddyscat

Also, those of you that have already changed your diff oil, do i need to replace the gasket? What do I torque the cover bolts to? and how much oil do I need with additive?

Thank you,

Edward

No gasket is needed since your aren't pulling a cover; their is a drain plug and a fill hole, the diff is very small in comparison to a live axle type diff. Be sure to clean the drain plug magnet. I got 2qts severe gear to 1 4oz LSD additive, used 1.5 qts of the gear oil. What I did was add the additive to the first quart, pumped it into the diff, then as a I was pumping a friend was pouring the second qt of fluid into the first bottle I was pumping from. Used about half when it started to rain diff lube, then I put the fill plug back in. Drive in figure 8's for alittle while...ready WOT!!!

SlvrBullIT · #**124** (**permalink**) 09-27-09, 12:29 AM

Well I did replace my motor and LSD to AMSoil, I have noticed some differences:
1) I drive my V to 2 places... Work..40+ miles 90% freeway and the track, I have tracked all my fuel usage since day 1 of taking delivery using Gas Cubby on my iphone. I'm getting better gas mileage 18.2mpg to 19.2 mpg, that's being calculated using actual fuel purchases, not DIC. Track was 8mpg vs. 9mpg after change
2) Car starts quicker, idles softer, shuts off better by not clunking

Maybe it is the AMSoil, maybe the V is just settling down. Whatever the case, it's not phantom things happening, I have taken the V in to have the clunking looked into and everyone that has been in my V makes note of the sound it had when shut off. It no longer clunks post AMSoil change out. Is AMSoil better than Mobil1...IDK, don't care either, just protect the V and make my life easier. Is Mobil1 bad...no I don't think so. I think what hurts AMSoil more than anything is the salesman fanaticism i.e. AMSoil > anything and everything in the world....