***The Engine Oil Bible***

[Hussain-Vtec]

Originally Posted by ilikerice

You check compression as is. If you have low compression in a cylinder, then you put a small amount of oil in the cylinder to try and seal off your piston rings. If you still have low compression you are just ruling out that your piston rings are good.. Then you look for other problems like bent valves or head gasket.

My opinion on all this after doing many 3.0L desludges from ES300 and RX300, Just read your owners manual and go by thier scheduled services and the oil they recommend. I personally will use any full synthetic that is on sale that month with filter. 99% of the time sludge happens when people use conventional oil and skip out on thier expected oil changes.

First thank you for post.

Second i have that issue like before 4 years & now I don't, i just share it to tel you guys some thing i Notice.

Regarding the Engine compression I no that, my point is if the oil is hot above
Its rating Numbers it get thin and for that it wont hold your piston Compression that's why when thy apply Oil's on piston to check the compression in a cylinder it will raise up due to the Cold oil or we can Say new oil applied on the pistons.

[ilikerice]

I dont wanna get off topic here but if you perform a compression check you use a guage with a valve in it to make a good reading.
Now what i think you actually mean is when you put compressed air into a cylinder, and you are listening for air releasing from either intake or exhaust valves. Thats when you will apply oil. But honestly you can use water if u wanted. Its just oil will burn up when spark hits it and/or gets forced thru the rings with the old oil. Water will serve the same purpose. Its just u dont wanna mix oil/water dur. And water wont burn up in the cylinder and we all know about liquids and being compressed in cylinders.
Totally off topic. Sorry. I'll leave it alone now.

[mik23]

Can you add engine oil colour I have a dark brown colour but oil is full marked and when i touched that it was feel bit viscous so I think its ok.

but need more info.

when to topup