Hi having just brought my first mk1 mx5 auto with nearly 100,000 on the clock,I felt it was time for a bit of a cost effective overhaul.
When I start her up she smokes for about 30 seconds, a friend of mine recomended slick 50 when I do the next oil change as this apparently helps the problem with older valves in the engine, coating the engine in a teflon type material which also helps reduces engine wear.
Has anyone used this product and if so which one would I need there are quite a few types to choose from on the market, and should I use a specific type of oil.
make up your own mind. Re smoke at startup, if it’s a puff of blue smoke, it is almost certainly oil draining down the valve stems past worn seals. Not a cheap fix I’m afraid, the cylinder head has to come off and be stripped down.
I use Mobil 1 fully synthetic oil in 5W50 grade, might be worth trying some decent oil
Wynns oil treatment is very impressive, I have been to a wynns demo on the effectivness of the treatment. I haven’t tried this product though, but it may help, I would be interested in the outcome I you decide to try it.
IMHO, Wynns are about the only oil additive retailers who do a decent product. I often recommend the oil flush stuff, and used to use it when I was in the UK. This stuff I haven’t come across, but I doubt it will cause any harm, and may help
I did actually try that Wynns Stop Smoke product (in a try-anything-once attempt to reduce my engine’s oil consumption). Didn’t make any difference at all.
Until I drained it out, I got 1 mpg worse fuel economy (it’s unbelievably thick). Waste of money, in my experience.
Edit to add: I’m not down on Wynns - I’ve happily used their engine flush and HLA treatment, but that particular product didn’t do any good.
Again, personal choice I guess but maybe spend 20-30 quid first to try something that appears to work by all accounts rather than whip off the head.
As an aside, I was told by my local Mazda dealers (and the head mechanic races them) that you should never run fully synthetic oil in the older MX5’s and nothing lower than 10w 40 as if you have worn valves/rings you will use more oil using a fully synthetic and much thinner oil. More so if you have any performance mods on. Again personal choice, I’m only repeating what I have been told.
