# Re:

Posted by Will (93 4dsc) on June 29, 2002 at 14:23:13:

In Reply to: More specifically, what do you think would be best for VTC clatter at startup --> posted by Bryan on June 29, 2002 at 11:05:20:

If I'm not mistaken, these oil viscosity numbers indicate that it's a multi-grade oil, which gets thicker (hence, 30 Weight oil) as the engine warms up. So when you compare 5W30 to 10W30, the difference only lies in the thickness of the oil at start-up, but ocne the engine warms to NOT, the oil viscosities are both the same. I use this knowledge to select 5W30 all-around, although some people use 10W because a) they're cheap and don't wanna pay an extra $0.25 for 5W, or b) they have leaks and want a thicker oil that isn't as thin.

I could be totally wrong here, but I think this makes sense, and I was taught all this back in automotive in high school, and don't think anyone would correct me. Sorry in advance if you already know all this.

Replys:

- Re: Oil Prices John (91 SE 5-spd) 14:20:37 6/30/2002 (0)
- Not necessarily. In Texas, the winter hardly goes below freezing, therefore I don't need 5W oil and I use 10W oil instead. nm G3Max (92 SE Auto & 92 SE 5 Speed) 16:19:39 6/29/2002 (2)
  - Yep. Owner's manual recommends 5W all-around, or 10W is fine too. (I hear Texas is where all the American hotties are at.) n/m Will (93 4dsc) 21:09:04 6/29/2002 (1)
    - You're darn right! :p nm James (92 SE auto) 22:29:08 6/29/2002 (0)

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: If I'm not mistaken, these oil viscosity numbers indicate that it's a multi-grade oil, which gets thicker (hence, 30 Weight oil) as the engine warms up. So when you compare 5W30 to 10W30, the difference only lies in the thickness of the oil at start-up, but ocne the engine warms to NOT, the oil viscosities are both the same. I use this knowledge to select 5W30 all-around, although some people use 10W because a) they're cheap and don't wanna pay an extra $0.25 for 5W, or b) they have leaks and want a thicker oil that isn't as thin. : I could be totally wrong here, but I think this makes sense, and I was taught all this back in automotive in high school, and don't think anyone would correct me. Sorry in advance if you already know all this.