Topping up with different oil - which method is best?
Discussion
I am in a bit of a bind after checking my oil at lunchtime. I won't have time to get any 10w-40 fully synth before going to Goodwood for the PH event this weekend.
That leaves me two choices and in all honesty I am unsure how best to proceed.
I either top up with a litre of part synth 10w-40 or I use fully synth 5w-40. The manufacturer says to use 5w-40 anyway, but an engine builder/tuner advises using 10w-40.
I'm currently minded to throw in a litre of the 5w-40 fully synth but wanted to check I am doing the right thing. Anybody able to advise?
That leaves me two choices and in all honesty I am unsure how best to proceed.
I either top up with a litre of part synth 10w-40 or I use fully synth 5w-40. The manufacturer says to use 5w-40 anyway, but an engine builder/tuner advises using 10w-40.
I'm currently minded to throw in a litre of the 5w-40 fully synth but wanted to check I am doing the right thing. Anybody able to advise?
If the manufacturer says to use 5w-40, I'd chuck a litre of that in.
I've often had to top up our cars with a glug of 'wrong oil' that I happen to have in the garage - not ideal but I figure better than running too low. I always oil change more frequently than the book anyway and none of the cars have suffered any ill effects.
I've often had to top up our cars with a glug of 'wrong oil' that I happen to have in the garage - not ideal but I figure better than running too low. I always oil change more frequently than the book anyway and none of the cars have suffered any ill effects.
5w40 is a bit thinner than 10w40 at cold temperatures.
Full synth will take high temperatures better and last longer than semi-synth.
Given that we're at the start of winter, and not terribly warm at the mo - and that you're going to be tracking it in a couple of days, it seems to me that both of those differences point to lobbing the full synth 5w40 in.
Full synth will take high temperatures better and last longer than semi-synth.
Given that we're at the start of winter, and not terribly warm at the mo - and that you're going to be tracking it in a couple of days, it seems to me that both of those differences point to lobbing the full synth 5w40 in.
andy-xr said:
f
ks sake, this is about as interesting as 'what butter shall I put on my toast'
It's not going to matter, to me, you, the car or anyone reading this, just chuck some in and get on with it.
Well, you could use either real butter or synthetic. The synthetic will be more spreadable at lower temperatures so for that reason I'd advise the synthetic. ks sake, this is about as interesting as 'what butter shall I put on my toast' It's not going to matter, to me, you, the car or anyone reading this, just chuck some in and get on with it.
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