I read the reviews of Lucus oil stabilizer. I read that it's thicker at cold start, so it coats things like timing chain to reduce rattle.


My question is, why not just use thicker oil?


If the car uses 5-30 OEM, wouldn't 10-30 coat better at cold start?

 

They have a Lucas display ay my local parts store, there is a tower of about 6 gears vertically and they mesh with eachother and spin. There are 2 of these towers side by side, but identical. One towers lowest gear is half submerged in a pool of Lucas, the other tower gearset has a pool of regular oil. You can spin the gearsets with a hand crank on the side of the display. The Lucas set, the oil completely covers all gears on literally first rotation and oil easily makes it to the top gear. The regular oil barely travels a thin film to the top gear.

I like the display, thought of stealing it everytime I play with it.

ps- Im still to cheap to buy the stuff

 

well lucas is making a ton of money selling this stuff to idiots

 

This stuff is better suited for highly loaded gears, such as a rear ring and pinion or transfer case. This does not belong in any engine. It is far too thick for the oil pump. Try up-ending a container on a 50 degree day... you practically have to heat it up before it will flow. Need I say more about adding molasses to your engine.

On timing chain engines there is adequate lubrication of the chain and guides to prevent wear. Everywhere else it is totally useless and a waste of money. If you consume oil, it is best to find the source of the leakage before adding something like this to your engine. They say breathing through a straw is like how a smoker breathes, how about your oil pump with this stuff?

 

i use lucas as assembly lube. its thick as **** and stays on the bearings pretty good.

lucas also has the break in additive fluid, which has some zddp in it. my turbo car (no cat/o2 sensor) gets a bit of this for every oil change.


i wouldnt run a ton of stabilizer in my oil, as mentioned its friggin molasses, and i also heard a rumor it gets pretty frothy at higher rpm

 

Chain noise is rarely the chain itsself and usually stems from worn guides or tensioners....

Simple. Flow. Cold start flow will suffer. Bearing clearances are extremely tight in a modern engine and many oil passages are typically less than .050 inch.


The viscosity of the oil is not all that dictates oil flow. Good,quality oil will have a good quality PPD additive. Pour Point Depressants or PPDs help increase cold flow.


At this point I could not honestly say if PPDs between 5W30 and 10W30 is the same,but given the characteristics of the oils ,Id say not.


Many cars and trucks today use 0W20. Using a thicker oil in theses applications is a guaranteed recipe for disaster.....