Join Date: Oct 2005
Car: 2003 MG TF 160 & 2000 Rover 45 2.0 TD
Oil Change - 10w40 Semi Synthetic or 0w40 Fully Synthetic?
I'm looking for a bit of advice from you all on what oil to use on my 53 plate TF 160.
I understand oils and chemicals well, as I've worked for an automotive oil company for some time now, but as much as I understand about the different oils, flow rates, additive packages, manufacturer approvals, etc, I need a bit guidance about the mechanics of the VVC engine.
I plan to change the oil in my TF every 6 months and having read the owners manual, I understand that any 10w40 (Fully or Semi Synthetic) oil is ok to use. It states that 5w30 can be used on all TF engines, except for the VVC. Anyone know why?
Halfords recommend 10w40, but state that if you want 'extra protection', to use a 5w40 Fully Synthetic. Castrol also recommend a 5w40 as their first choice oil for the VVC.
I was planning to use Mobil 1 0w40 Fully Synthetic, as I trust the brand and it's quality. This oil is basically thinner when cold than 10w40 and 5w30 oils, but it's flow rate when at full operating temp, is the same as 10w40 and a little bit thicker than 5w30.
So, does anyone think that 0w40 is going to be too thin when cold? Will it not be sufficiently protcting the engine at start up? I don't think it will be a bad thing to use this grade, as the oil pump will be able to pump it round the engine faster at start up and hopefully limit wear at the top of the engine.
Sorry for the long post, but I wanted some opinions on this from you guys and also to find out if I'm talking rubbish or not!