August 13, 20179 yr Have just bought a new 4rt 260 obviously the manual recommends repsol oil as its spanish but whats everyone using in the engine and gearbox ?
August 13, 20179 yr There are numerous posts on this if you have a search but consensus is as above for engine or similar and the elf htx oil or atf for gearbox . typically every 6 weeks. Change engine oil filter every other oil change .
August 13, 20179 yr Author i see the castrol comes in semi or fully synthetic which do you use ? Thanks
August 13, 20179 yr I use a Rock Oil light gear oil in the gear box. Works well and was the recommendation of the man who knew more about the 4RT than anyone else in Britain I should think. Any good 10/40 will suffice for the motor, full or semi.
August 13, 20179 yr I use a high quality fully synthetic motorcycle oil 10-40 for the engine and the ELF HTX 740 for the transmission. However, I know others using ATF with good success in the transition, and if I was going to try something else for the transition I think the GRO extreme has the closet viscosity and heat ratings to the ELF but isn't available in the US. Edited August 13, 20179 yr by jonnyc21
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