Ripsnort

Not even thinking that this car would use a synthetic blend, I did an oil change with 10W-40. (It dawned on me after I'd drained the oil, changed the filter, and was about to fill 'er back up again)
A) I plan to change back to 5W-30 blended synthetic
B) considering this isn't a high compression engine (and not sure if that would even make a difference..) what harm is there in going from a syn. blend, to standard oil, back to a syn. blend? She's driven it about 200 miles since...

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05' Mustang Premium V6 convert-Redfire Metallic (wifes)
01' BMW 330Ci (Daddys)

Derf00

Ya know..good question. I was wondering about the same thing. ...Myth #4 answers that though

http://www.quakerstate.com/pages/carcare/whattoknow.asp

Most oil manufacturers have something like this list...interesting how MOBIL 1's site doesn't have the same one though

http://www.mobiloil.com/USA-English/...ics/Myths.aspx

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quote:

ORIGINAL: P Zero

He could strap a rocket to his ass and beat em on foot too.
-P.

05V6inMD

Who said it needs a synthetic blend?

RedHot05GT

The owners manual... at least mine does.

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2005 GT: Torch Red
charcoal leather, manual
IUP, AAT, SIA, Shaker500
K&N CAI
SCT Excalibrator 2 tuner
Parrot Bluetooth Handsfree phone kit

Ripsnort

I'll have to double check, but I believe the owners manual does not require ("need") synthetic, but recommends a synthetic blend (and naturally, the brand that Ford has a shared interest in)

My BMW actually REQUIRED it in its owners manual, and some say it is due to the high compression engine, though I'm not mechanically-educated enough to argue that point.

Hey, RedhotGT05, love that stripe you have on your Stang, was that a custom paint job aftermarket?

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05' Mustang Premium V6 convert-Redfire Metallic (wifes)
01' BMW 330Ci (Daddys)

05V6inMD

Does it really say it is required?

scheetz83

maby that is why you dont need to chang oil tell the 5000 mark. Mabey a synthetic blend wont brake donw as fast.

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RedHot05GT

I'll go check my manual tomorrow, but I could have sworn it was required, not "recommended". But if it also "recommends" at least 87 gas, then they mean "otherwise you'll be sorry!"

Thanks for the compliment, the stripe is a decal I put on from stencilsandstripes.com.

__________________

2005 GT: Torch Red
charcoal leather, manual
IUP, AAT, SIA, Shaker500
K&N CAI
SCT Excalibrator 2 tuner
Parrot Bluetooth Handsfree phone kit

MustangScott

I swear by Royal Purple. I've heard nothing but the best from them.

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2005 Silver 4.0L Manual.
PERFORMANCE: K&N CAI, BBK TB, NGK IX Plugs, 9MM wires, Screamin Demon, SS Shorties, X-Pipe, FlowMaster 40's, Front/Rear Swaybars, Tokico Shocks, BMR Springs, Shaftmasters 4" DS, LiveWire.
FUTURE: 8.8" Rear, 3.73's, T-Lok, X-Charger, Strut tower brace, Clutch.
SHOW: Pioneer AVIC-Z1, Exhaust tips, Shorty antenna, 18x9 Godspeed Omega's.
FUTURE: Carvinis: C-Series front fascia, Stalker side panels, side scoops, Stalker rear end. Roush: Rear 1/4 Louvers, 3pc wing.

RedHot05GT

Ok, I just checked the manual and it does indeed say 5w-20 synthetic blend is "recommended". And as I thought, it also "recommends" at least 87 octane fuel. So go ahead and use regular dino oil and some 83 octane fuel and let me know how that works for ya

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2005 GT: Torch Red
charcoal leather, manual
IUP, AAT, SIA, Shaker500
K&N CAI
SCT Excalibrator 2 tuner
Parrot Bluetooth Handsfree phone kit