If I want to put fully synthetic oil in my VTR, do I have to flush out all the semi-synthetic first?
Or can I just top up with the fully synthetic?

Cheers

to be honest mate i would give the engine a bloody good flush out before i use a different oil, I do a oil and filter change every six months and i always flush the engine with a good quality engine flush mate <img border="0" alt="[cwhelp]" title="" src="graemlins/cwemotions041.gif" /> <img border="0" alt="[cwhi ya]" title="" src="graemlins/cwemotions040.gif" /> <img border="0" alt="[cwlater]" title="" src="graemlins/cwemotions047.gif" />

<img border="0" alt="[cwhelp]" title="" src="graemlins/cwemotions041.gif" /> Good advice Tony, Best not to mix oil types. I have allot of Mobil 1 Fully Synth oil in work, Cheaper than the shops......

Is it much improovement on Magnitec???

Just look at the F1 Cars, do you see magnatex written on them ?????

TRUE

Don't Just Take Our Word For It
Mobil 1 is used in race cars around the world – NASCAR, Formula 1, endurance racers, you name it. Here are some comments from some of the top drivers and race engineers who rely on the protection of Mobil 1.
"We really want to push everything to the limit, and without the best oil, you just can't do it. Mobil 1 has been able to let me do a lot of things that we haven't been able to do in the past."
– Rusty Wallace, NASCAR race driver

"I've been using Mobil almost my entire career. I've had over 50 wins. That's something I'm really proud of and I owe a lot of that to Mobil 1."
– Rusty Wallace, NASCAR race driver

"Formula One is an extremely rigorous test ground for the Mobil product. We're seeing extremely high temperatures, high loads in the engine, and of course the lubricants and fuels that support those processes have to be the very best. And that's exactly what we strive to achieve with our partner, Mobil."
– Ron Dennis, President and CEO, TAG McLaren Group

"To race a car in the 24 Hours of Le Mans means that the driver intends to race that car to the maximum. So every single component of that car has to be designed to withstand that kind of driving. And we also would strongly recommend to every driver of one of our road cars to go on using Mobil 1 and, by this, protecting their investment in the car."
– Herbert Ampferer, Director, Porsche Motorsports

"We like to be with the winners, so we use Mobil 1."
– Domingos Piedade, Managing Director, Mercedes-Benz AMG

give it a go mate
my mate gary he drives a mk5 ford escort coswoth turbo and he only uses moblie 1 <img border="0" alt="[cwhelp]" title="" src="graemlins/cwemotions041.gif" />