1. Briggs Valvoline & 10 w 40 (shook up) YUK
2. FHS Med & Briggs Valvoline (it mixes)
3. Briggs conventional 30W Oil from my new generator & Briggs Valvoline (doesn't mix)
4. Citgo 10W40 & Briggs Valvoline Shook up & settled (doesn't mix)
5. Red E & Briggs Valvoline Shook up & settled (hard to see here but doesn't mix)
6. Mobile One 5W20 & Red E Shook up & settled hard to see but it seems to mix, HMMM
7. Mobile One 5W20 E & Briggs Valvoline Shook up & settled (doesn't mix)
8. Mobile One 10W30 & FHS Med Shook up & settled Hard to see but (doesn't mix)
9. Briggs 30W & STP & Briggs Valvoline Shook up & settled Doesn't mix. This one is a
home made concoction of assembly lube mixed with Briggs Valvoline.
My Recommendations:
Do not take a chance on mixing any brand of oil with another.
Do not use assembly lube.
Assemble engine with the oil you are going to use to break it in with and race with.
Do not break in engine on conventional motor oil and then switch to a "Kart Racing oil"
There are probably other scenarios that i haven't thought of.
There are probably other scenario's that i haven't thought of.
There are probably other scenario's that i haven't thought of.
All it takes is a few seconds with out lubrication to start welding (metal transfer) from the
rod to the crank pin. Once aluminum rod material starts to build up on the crank pin it's all
over.
These simple test were done at 65* F. Who knows what will happen when you heat any of
these concoctions up and stir it up violently in the engine.
on top of it. Notice that it creates it's own separate pool. There is a
boundary between the two pools. If the two oils are compatible they will mix
completely.
brand of oil to another (to be safe)
you must completely flush the engine
with a solvent that will cut (clean) the
original oil.