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Yet another Oil question

Is it ok to use fully synthetic 0-30W in a TS engine?

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(Post Link) post #3 of 8 Old 01-02-11 Thread Starter
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Thanks David C for the quick answer, was offered some 0-30W cheap, was temped, glad i asked!!
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0w-40 will be ok, the 0w-30 isn't thick enough when hot.
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Personally I wouldn't use 0W40 either.
Something is always lost from the upper end to get down to a "0" grade.
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I use 5W40 without issue.

Search for Oilman here at the forums and send him a PM or visit opieoils.co.uk - you'll get info regarding what oil to use and you get discount at opieoils.co.uk for being a member here.

I just ordered 5 litres of Titan Race Pro S 5W40 which includes a litre free and used a discount code for free shipping but I think this has ended.
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Quote:
Originally Posted by chillihound View Post
I use 5W40 without issue.
5W40 is fine, but there is always ALWAYS a trade off to get to a 0W40, so not a great move to use 0W40.

The trade off is clear to see when you compare oils in the same range.
HTHS will be lower, evaporative loss will be higher.
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I read that the actual viscosity at the lower end on 5w-40 and 0w-40 oils was the same. It is just the pour point is lower.

However any grade that has a large gap beween the W rating and the hot rating will have a lot more viscosty modifiers than an oil with a smaller gap, which can break down over time leaving varnish in the engine and a thinner oil when hot than was originally intended.

One of the viscosities with the biggest gap is the 10w-60
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