Oil Flush

[Capemayal]

Before switching from the factory installed oil (my first change), should I use a flush? If so, any thoughts on which one?

Thanks.

[adam1991]

No.

A "flush" is never a good idea, under any circumstances.

[Earthling]

<div class='quotetop'>QUOTE(adam1991 @ Apr 5 2007, 10:12 AM) [snapback]418142[/snapback]</div>

No.

A "flush" is never a good idea, under any circumstances.
[/b]

There is never a reason for an oil flush.

I've never done one, and never will.

For example, on the first oil change, I went with full synthetic oil. There is no need to do any oil flush when switching between synthetic and conventional oil.

By the way, the motor oil that came in my Prius looked like synthetic, or a synthetic blend.

Harry

[ScottY]

<div class='quotetop'>QUOTE(Earthling @ Apr 5 2007, 10:21 AM) [snapback]418145[/snapback]</div>

There is never a reason for an oil flush.

I've never done one, and never will.

For example, on the first oil change, I went with full synthetic oil. There is no need to do any oil flush when switching between synthetic and conventional oil.

By the way, the motor oil that came in my Prius looked like synthetic, or a synthetic blend.

Harry
[/b]

Harry,
How can one tell if the oil looks synthetic or not? Thanks.

[subarutoo]

<div class='quotetop'>QUOTE(ScottY @ Apr 5 2007, 09:42 AM) [snapback]418245[/snapback]</div>

Harry,
How can one tell if the oil looks synthetic or not? Thanks.
[/b]

There are no dino bits in the synthetic .

[Earthling]

<div class='quotetop'>QUOTE(ScottY @ Apr 5 2007, 12:42 PM) [snapback]418245[/snapback]</div>

Harry,
How can one tell if the oil looks synthetic or not? Thanks.
[/b]

I could be wrong, but it had that "less black, more slippery feel" that I am used to. Maybe it smells different. Anyway, the oil in all my motors, including my Briggs & Stratton lawn mower engine get nothing but full synthetic oil.

Harry

[adam1991]

<div class='quotetop'>QUOTE(Earthling @ Apr 5 2007, 04:29 PM) [snapback]418400[/snapback]</div>

I could be wrong, but it had that "less black, more slippery feel" that I am used to. Maybe it smells different. Anyway, the oil in all my motors, including my Briggs & Stratton lawn mower engine get nothing but full synthetic oil.

Harry
[/b]

You know, this is similar to the "how often should I change my oil" discussion.

Full synthetic in a lawnmower is overkill, just like 3K oil changes are overkill. But they're both cheap insurance--very cheap.

[ekpolk]

<div class='quotetop'>QUOTE(Earthling @ Apr 5 2007, 03:29 PM) [snapback]418400[/snapback]</div>

I could be wrong, but it had that "less black, more slippery feel" that I am used to. Maybe it smells different. Anyway, the oil in all my motors, including my Briggs & Stratton lawn mower engine get nothing but full synthetic oil.

Harry
[/b]

Some engines just don't do much to an oil, and some oils look lighter, some darker. Castrol's current version of GTX, their baseline dino, is a very pale blonde formulation (using it for a couple OCI in my wife's new Avalon). By contrast, the best synthetic, even a true PAO/ester, if used in a diesel, will be gross sooty black within minutes of being installed. You really can't tell much about an oil by the look.

[Rest]

<div class='quotetop'>QUOTE(adam1991 @ Apr 5 2007, 04:48 PM) [snapback]418412[/snapback]</div>

Full synthetic in a lawnmower is overkill, just like 3K oil changes are overkill. But they're both cheap insurance--very cheap.
[/b]

Actually this is not true as it isn't cheap insurance. It costs more in the long run by changing good oil.

[adam1991]

<div class='quotetop'>QUOTE(Rest @ Apr 8 2007, 07:11 AM) [snapback]419768[/snapback]</div>

Actually this is not true as it isn't cheap insurance. It costs more in the long run by changing good oil.
[/b]

If you know it to be good.

If you don't know--and without an analysis, you don't--then it's cheap insurance.