Thread: What Motor oil do you use in your grand prix?

I hate oil threads. It breeds ridiculous ignorance.

Originally Posted by 02 WS6 TA

I hate oil threads. It breeds ridiculous ignorance.

Raiysin Erlz

annual oil changes with amsoil 5w30

Originally Posted by FriboRage

I use Castrol Edge Titanium, 5w30

I am now wondering how big the additive particles are - to the end of "Would a good/efficient filter like Wix/FramXG would filter out the additives you're paying for - clogging the filter faster and leaving the engine with less protection/cleaning/etc. Anyone know? I know 5µm can basically pass through without harassment.

Originally Posted by FriboRage

Save even more money and get a Purolator which is even better than the K&N and Mobil 1.

As far as filtration goes, Mobil-1 and K&N are on-par if not ever-so-slightly better than the Purolator Classic. But at $13-15, vs Purolator Classic's $4 price tag... hard to argue with, unless you'd prefer longer changes.

In order of filter performance:

Fram Xtended Guard XG - ~$8, WalMart has them, 10,000 miles on box
Purolator Classic - $4 - Advance Auto (etc) has them... I would totally use this for 4,000 mile changes if I needed them (60% less filter media than XG)... but three of them to get you 10,000 miles is $12, so totally too expensive unless it's necessary or you like oil changes.

Anymore, I wouldn't recommend anything of lower quality, though I guess the Prolator Pure-One could probably do 10,000 miles at $7 with the amount of filter media it has... I don't really know what distance any of them are recommended for except for the Fram XG.

I use the GM oil we have at the dealership. Its basic conventional Mobil 10-30, and a Delco PF47 filter. Discounted cuz I work here its like $15 bux. Easy cheap and works. If I ever get around to building my other engine up I will probably switch to Mobil1, but until then, meh...

Originally Posted by TLSheff

Delco PF47 filter.

You'd be hard-pressed to find yourself a worse filter.

Meh, stock engine... a filter is a filter.

Usually I use Wix... but like I said... work discount. <---- key

royal purple with k&N filter turbo so needs synthetic

Originally Posted by SlowNA06

You'd be hard-pressed to find yourself a worse filter.

Not really- They paint Frams bright orange so they're easy to identify.

JoshV: If you're using Royal Purple oil, why a mediocre K&N filter instead of a nice Royal Purple filter? You clearly don't mind an extra buck or two for an oil change.

Originally Posted by 02 WS6 TA

Not really- They paint Frams bright orange so they're easy to identify.

Last I checked, even Fram ExtraGuard (Orange) was far better than Delco E-cores. But if you like your car/wallet, you wouldn't settle for less than Fram Xtended Guard.

Originally Posted by matt5112

Fram orange can just got cheaper in construction.
Time for an update.

Could you please be more specific? That is too vague to be helpful.

JoshV: If you're using Royal Purple oil, why a mediocre K&N filter instead of a nice Royal Purple filter? You clearly don't mind an extra buck or two for an oil change.

nothing wrong with K%N filter.

Originally Posted by joshv

nothing wrong with K%N filter.

Other than the price

Originally Posted by dsmuts

Other than the price

not when u know someone at a parts store lol

Originally Posted by SlowNA06

JoshV: If you're using Royal Purple oil, why a mediocre K&N filter instead of a nice Royal Purple filter? You clearly don't mind an extra buck or two for an oil change.


Last I checked, even Fram ExtraGuard (Orange) was far better than Delco E-cores. But if you like your car/wallet, you wouldn't settle for less than Fram Xtended Guard.




Could you please be more specific? That is too vague to be helpful.

Mediocre K&N, eh?

No, I don't like my car, and know nothing. Carry on with the knowledgeflow, fussy base GP owner. *teehee*

If you guys want the truth on oils and filters, read up on bobistheoilguy and you'll soon have the answers w/o the bickering etc.

Originally Posted by 02 WS6 TA

Mediocre K&N, eh?

Upon further research, despite significantly better filtration, the Royal Purple may not last as long as the K&N because the RP has significantly less filter material.