Mitsubishi FTO GPX Engine Oil?

Mitsubishi FTO GPX Engine Oil?

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Discussion

Frazer1988

Original Poster:

5 posts

110 months

Thursday 22nd January 2015
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I've been talking to some other FTO owners but I still don't know which type of oil to use its 10W 40 standard but I've been told fully synthetic isn't always the best especially with high milage older engines such as my 1995 2.0 MIVEC V6 at just under 90k miles.

Thanks smile

StoatWithToast

2,101 posts

255 months

Sunday 25th January 2015
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Fully synthetic oil is much better for all engines as the clever boffins can make it do exactly what they want, including helping with circulation, wetting components, sticking to things longer, etc, etc - they are amazing and well removed from mineral oils.
Semi-synthetics are usually just mineral oil that have been treated by heating under pressure and some extra bits as the hydrocarbons used in metal lubricants are not as complex as needed in other applications so fully synthetic processes and base materials aren't as expensive.

On old high milage engines - think '40s, 50s, 60s and a few 70s English car engines - an era when engines burned oil from the off, and practically drank the stuff as fast as fuel after a 30,000 miles. For these engines fully synthetic would be a waste (but I think still better than pure mineral oil)

The FTO engines are great units and are very well designed and made (for their age) - so long as you don't play with them (speaks the voice of experience).

I stick fully synthetic oil in all our cars now (engines, gearboxes, diffs, etc) and they are all much happier for it. Only the XI has cheaper engine oil as we race it and so replace the oil every few hundred miles and expect to rebuild it pretty regularly too so we'd be paying a lot of extra money for not a lot of extra benefit.