Love it? Hate it? Why? What do you use?

Posted by Greg Love it? Hate it? Why? What do you use?

i used it exclusively in my Cobalt SS. I had that it was perfect for racing engines and since i beat the shit out of the car routinely, seemed like a good match. I am inside 40k on my Cruze and still have to use Mobil 1 Dexos... probably next oil change I start using the purple again.

I might try it next oil change if I can get a good deal. I'm interested in their trans fluid too...

Posted by Agent Skelly I might try it next oil change if I can get a good deal. I'm interested in their trans fluid too...

i was told on the Cruze forum to change the transaxle fluid asap to Redline's formula...

Cool, a cruze forum. No but really, I've run mobile one in my BMW and has had it since almost new, 260k later still runs great and never uses a drop in between .

Posted by Samurai i was told on the Cruze forum to change the transaxle fluid asap to Redline's formula...

Redline I was thinking too; I think you can get them in 1 gallon jugs too!

Being Samurai approved, that is good enough for me.


Pennzoil Ultra Platinum is made from natural gas. It's got me interested, but I am leaning more towards RP.

Posted by Greg Being Samurai approved, that is good enough for me. Pennzoil Ultra Platinum is made from natural gas. It's got me interested, but I am leaning more towards RP.

i would PM Bandi if anything.

Ive been running Amsoil in my diesel for the last few years. Increased life and the engine seems to be happier running with it.

Word to the wise though, if you have any oil seeps at all get them fixed before switching to synthetics. My cummins had a few seeps on dino oil but once the synthetic cleaned the crap out of there they were full on torrents. It was amazing the crap that came out with the first oil change!

Posted by Samurai i would PM Bandi if anything.

I've honestly had no experience with Royal Purple- but I have heard good things from people who know cars.

I've run Castrol in everything I've owned since about 2001 (Syntec/Edge in high perf and turbo stuff and good old GTX in my other stuff) and have never had a lubrication issue. I've had two engines fail with Pennzoil in the pan.

My bug at 655,000 km has no lobe wear on the camshaft at ALL... and it's had synthetic Castrol since new.

I have always run castrol, now synthetic in my EP3.

But I would be more concerned with changing tranny fluid, oil has a filter, and is changed quite often, and circulates, etc.

Tranny fluid just sits there, gets thrown about, but is not filtered etc, same as the Diff. People rarely change that. I usually do mine every 2nd, oil change, or 3rd.

Most transmissions if not all have a filter?

I am saying engine oil has a filter, tranny, and diff do not.
People neglect to change tranny, and diff.

bah royal purple not a fan of it,

Liquimoly or Motul all the way

Motul is nice. I feel bad draining the super-primo gear oil (Gear FF) and disposing of it.

Every vehicle I ever owned has had a transmission filter.

every automatic ive owned had a filter. The Row your owns not so much....

i was talking manual transmission.

I've seen a manual trans with a filter; but it was spin-on filter....I can't remember what car that was though...

Subarus have spin on filters