Test was done with:

 

On the left is HPR30 extra 10 20-60w (enigne).

 

On the right is Nulon lim slip SAE 90. (gearbox).

 

as shown in this pic:

 

 

What I see in the pic is a 20w 60 oil and a 90sae grade oil

 

Not a 40w and 80w90 oil like what was mentioned in the other post.

 

As for annoying you .. realy trying to care

Just tried to show that motor and gear oilgrades can't be directly compared on viscosity going by the W numbers, and put up link to if you wanted to compare you could. Theres a chart for comparing

hydraulic oil viscosity as well.

he's refering to this thread .....How Many Litres Of Oil For A 5k?.

Not intersted in arguments so....don't argue. If you've gotta start using additives in your engine it's time for a rebuild or at least a head job... speaking of which :blinks:

Edited August 27, 201016 yr by GJM85

Nice to see you following the scientific method Trev :blinks:

 

http://en.wikipedia.org/wiki/Scientific_method

 

The last step is Retest, so if anyone else wants to challenge the results feel free to reproduce the test.

 

I think what we need to do now is produce some graphs and come up with some crazy theory that is proved by the results, like not driving Rollas causes cancer.

If you want to test the viscosity then just make yourself a cheap tester. I had a plastic one for paint but you could very easily make one out of cardboard. Just get two peices of cardboard about 150mm X 25mm, cut a thin V inside both of them then with a marker mark numbers up the side. The more viscos (Thinner) the fluid is the faster it will travel up the slit and spread. The thicker the oil will stick to the sides for longer and the thin oil will fall off quicker.

 

So dip 1 stick in engine oil and the other in diff oil, Pull out and watch what happens. The thicker oil will be on about 4 and the thin oil with be on 6. Both have to be done at the same time with identical cardboard pieces for it to become sicentific :blinks: \

 

Edited August 27, 201016 yr by Johno