Lucas Oil Engine Oil Stop Leak

[crouse]

My daughter's 2003 Ford Escape leaks oil from the front cover so I put a quart of Lucas Oil Engine Oil Stop Leak in when I changed oil. It has reduced the amount of the leak considerably. I'm getting it ready for her to take to college and want to change the oil again before she leaves. The stop leak is really thick and I'm worried it will change the viscosity of the oil and make it hard to start this winter. Any thoughts on this?

[Turbov6Bryan]

I know you said it's leaking from the front cover, have you found the source of the leak? Can you fix the leak?

[crouse]

It's not worth fixing. It's a 2003 Escape with 125K on the clock. Since the engine is transverse mounted, the engine has to be pulled to change the gasket/seal on the front cover.

[Zack]

I have had 2 escapes.
The leak is toward the lower end of the timing cover is a crevice.
I have successfully cleaned those areas, gooped them with silicone and the leak never returned.
An hour in the garage and 5 bucks for silicone.
Can't go wrong

[crouse]

So back to my initial question. How much of a viscosity change will there be? I'm worried the thicker oil will make it hard to start when it's 20 below zero this winter.

[fastblackmerc]

Here some info on using Lucas products.

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/2973755/Re:_Lucas_Enigine_oil_Stop_Lea

As stated in the discussion, use a "high mileage" oil instead of a "mechanic-in-a-bottle" fix.

[fastblackmerc]

Read the last 6 or so posts in that forum.

[RF Overlord]

To amplify on what fastblackmerc said, most of those miracle-in-a-can products are nothing more than concentrated VII (Viscosity Index Improver), sometimes with a bit of seal-sweller added. Generally the addition of a can of these things will increase the viscosity of the oil one grade...i.e. a 5W-30 is now a 10W-40.

As stated above, just use a high-mileage oil of the correct grade. Unless your daughter is going to Ice-Road Trucker school, that should work fine.