Hi. I used synth in my last four cars, starting with a '86 Jetta. We have many really cold days here in Canada (it is currently -20 C) and I'd like to use it in my new XL7 Limited. Does anyone know what Suzuki has to say about synthetics and their warranty? The science says that it is just better, but I was unable to find any reference in my manual or on the net from Suzuki.Originally posted by td248@Dec 14 2004, 12:14 PM
I used synth in both diffs, transfer case, and main gearbox on mine. The service schedule for my old 2001 (pre-grand) Vitara is obviously different to you later Grand Vitara boys. There is nothing in it about changing diff or gear box oil before 27K miles. Maybe the diffs are different or like XL7Limited says, on new models they use a thinner viscosity fluid to break them in quickly, hence the 7.5K oil change.