Just because LR mentions what to use it's not the only and best choice. Pick anti-freeze, depending on who is supplying the cheapest coolant is what LR recommends. Visiting a dealership to chat with the service writer as well a couple mechanics as personal friends. Coolant of the month could be orange, red, yellow or green depending on the bulk barrel last shipped. LR again with type of oil to use in the 5 spd D1 I own, ATF to gear oil to engine oil depending on the day of the week.
Hell I can guess better. Honda motorcycle racing transmission oil with all the special high shear additives has been working great with synchros and operation the past 84K miles of use rather hard use behind a warmed over 4.6, a someday 4.9 arm with Top Hat liners the next bullet Street only Disco setup to corner, Sierra mountains and passes, Gold Country exploring.
Ported cast iron exh. manifolds, high flow Cats, Borla Cat back exh. Mark Adams "Tornado" chip. Sounds like a 298 with Glaspacks stirring the stick. Milled out 1 1/2" aluminum spacer for under the ram tube housing, 4 hole Bosch injectors within 3/4% flow, 3.0 Bar regulator.
Spark plugs, i'm a surface gap person like we installed rebuilding 2800 Pratt & Whitney round engines in my aviation field. Haven't seen an engine yet certified to run side electrode ground plugs with only surface gap approved.
Bosch Platinum Plus or better yet liking the Bosch Platinum +4 plugs having surface gap.
Disco a parked toy besides your the only person in six months this one reply, others must have engines not requiring spark plugs? Haven't checked the + 4 plugs if in the LR heat range? Bosch Platinum 2 I recall for the 4.0 & 4.6 LR engines.
Holding at 12 bikes all keepers, no Harleys but have a soft spot for the Shovelhead. Extrude Hone process after a mild (not crazy) porting waking up the Shovels a little then leave them alone.
Magnetos hell yeah Matchless 500 and 600 thumper at the hut. Nortons, BMW's, Matchless, two Honda thumpers.
BTW, 2020 was dead (China Virus) but on again the 2021 the Hollister 4th July rally. Dad was there in 47 and the 50th in 97, we rode together up intil 01, RIP 8-11-02 couldn't ride Hollister in 02. I went solo, stopped by dad's, saw tears he wanted to ride but couldn't. He road almost daily age 14 to 80, to work year round rain or shine. Triumph and Matchless thumpers his thing.
Pushing to reassemble after taken apart to transport 84 XL600 Honda thumper garage queen find. Street only here. Had to go to Arizona to pick it up (49 sytate) and back to the S.F. Bay area a 1,743 mile two day road trip from hell to get that bike. Different bike each year to Hollister I ride, Honda this year, R90s 2022.
Good to hear from another wrench and DIY person. Ride safe.....~~=o&o>......