Any side-effects if keep changing petrol & engine oils?

[Mutant]

Any long term side-effects if keep changing different petrol brands/grades & also engine oil? Coz each time we change engine oil & top up petrol, sure have a few % left of the previous brand. Concern about engine internal cleaniness.

Been doing that to my bikes before (now on bike no. 6); so far ok ok. For my current 1st car; abit cautious..

[Booboon]

no problem. Infact I find my fc gets better when I mix petrol grade.

[Wolfy3769]

personally i think if u stick to the same EO grade it is okay... like 5W40... or 5W50...also stick to 1 type of EO .. like fully sythentic.. or mineral oil...

I think shld be okay for the engine...

 

as for petrol, no harm what u use (RON or brands) as long as it meet ur car mininal RON requirement.

[Crazecow]

If you change engine oil too frequently, you will get a hole in your pocket.