What oil is best for a chevy 305 with a new short block, all stock parts inside and stock heads.
oil recomendation
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I'll kick it off with RTS 5W-40
5-30 or 5-40, maybe 15-40.
Depends on how hot you get her when running.
Something would have to be wrong or loose if the 5-30 did not work .
Depends on how hot you get her when running.
Something would have to be wrong or loose if the 5-30 did not work .
x-30wt or if it consumes oil x-40wt
Nice simple engine that is easy on oil...
Any 5w30 every 4-5k depending on use.
Take care, bill
Any 5w30 every 4-5k depending on use.
Take care, bill
Agree with Bill.
I agree with Bill. There are many good oils that you could use, pick a good 5w- 30 and use regular OCIs.
w-30/40Most any XW30 or XW40 would do. To nail one down for you how about Castrol 5W30.
Since the 1975 many GMs call for 5w30 and 7500-mile OCI. Some allow, some require, some warn against the 40 weight. Brand selection is an opportunity of fine tuning for hydraulic lifter noise (if any) or carbon build-up scheme. I'd start with one of the US Valvoline's with below 1% sulphated ash level (for those older low rev. engines tend to suffer from the carbon build-up somewhat earlier). Or else, I'd go with synthetic Mobils from the begining and forget about both cleanliness problem and flat tappet lifters.
It's in a 82 TA but not raced or driven hard.
I had the short block replaced last year from a after market engine builder. so i don't know the block year but it is old style because my heads and intake bolted back on.
What brand of oil would be best, I know the zinc levels are all low nowadays.
who has the most in a 5w30 that i can buy off the shelf ?
I had the short block replaced last year from a after market engine builder. so i don't know the block year but it is old style because my heads and intake bolted back on.
What brand of oil would be best, I know the zinc levels are all low nowadays.
who has the most in a 5w30 that i can buy off the shelf ?
Some ZINC info,
Referenced from: http://www.vwtrendsweb.com/tech/0304vwt_synthetic_oils/
(FYI - the Valvoline Race oil listed below is NOT street legal!)
What Oil is Best for You, a Comparison...
...Side-By-Side Comarison
Brand V.I. Flash Pour %ash %zinc
10W-30
AMSOIL 142 480 -70 0.5 n/a
Castrol GTX 140 415 -33 0.85 0.12
Chevron Supreme 150 401 -26 0.96 0.11
Exxon Superflo Hi Perf 135 392 -22 0.70 0.11
Exxon Superflo Supreme 133 400 -31 0.85 0.13
Havoline Formula 3 139 430 -30 1.0 n/a
Kendall GT-1 139 390 -25 1.0 0.16
Mobil 1 160 450 -65 n/a n/a
Pennzoil PLZ Turbo 140 410 -27 1.0 n/a
Quaker State 156 410 -30 0.9 n/a
Red Line 139 475 -40 n/a n/a
Shell Fire and Ice 155 410 -35 0.9 0.12
Shell Super 2000 155 410 -35 1.0 0.13
Shell Truck Guard 155 405 -35 1.0 0.15
Spectro Golden M.G. 175 405 -40 n/a n/a
Unocal Super 153 428 -33 0.92 0.12
Valvoline All Climate 130 410 -26 1.0 0.11
Valvoline Turbo 135 410 -26 0.99 0.13
Valvoline Race 130 410 -26 1.2 0.20
Valvoline Synthetic 140 450 -40 1.5 0.12
5w30
AMSOIL 168 480 -76 0.5 n/a
Castrol GTX 156 400 -35 0.80 0.12
Chevron Supreme 202 354 -46 0.96 0.11
Chevron Supreme Synt. 165 446 -72 1.1 0.12
Exxon Superflow HP 148 392 -22 0.70 0.11
Havoline Formula 3 158 420 -40 1.0 n/a
Mobil 1 165 445 -65 n/a n/a
Mystic JT8 161 390 -25 0.95 0.1
Quaker State 165 405 -35 0.9 n/a
Red Line 151 455 -49 n/a n/a
Shell Fire and Ice 167 405 -35 0.9 0.12
Unocal 151 414 -33 0.81 0.12
Valvoline All Climate 135 405 -40 1.0 0.11
Valvoline Turbo 158 405 -40 0.99 0.13
Valvoline Synthetic 160 435 -40 0.12
Referenced from: http://www.vwtrendsweb.com/tech/0304vwt_synthetic_oils/
(FYI - the Valvoline Race oil listed below is NOT street legal!)
What Oil is Best for You, a Comparison...
...Side-By-Side Comarison
Brand V.I. Flash Pour %ash %zinc
10W-30
AMSOIL 142 480 -70 0.5 n/a
Castrol GTX 140 415 -33 0.85 0.12
Chevron Supreme 150 401 -26 0.96 0.11
Exxon Superflo Hi Perf 135 392 -22 0.70 0.11
Exxon Superflo Supreme 133 400 -31 0.85 0.13
Havoline Formula 3 139 430 -30 1.0 n/a
Kendall GT-1 139 390 -25 1.0 0.16
Mobil 1 160 450 -65 n/a n/a
Pennzoil PLZ Turbo 140 410 -27 1.0 n/a
Quaker State 156 410 -30 0.9 n/a
Red Line 139 475 -40 n/a n/a
Shell Fire and Ice 155 410 -35 0.9 0.12
Shell Super 2000 155 410 -35 1.0 0.13
Shell Truck Guard 155 405 -35 1.0 0.15
Spectro Golden M.G. 175 405 -40 n/a n/a
Unocal Super 153 428 -33 0.92 0.12
Valvoline All Climate 130 410 -26 1.0 0.11
Valvoline Turbo 135 410 -26 0.99 0.13
Valvoline Race 130 410 -26 1.2 0.20
Valvoline Synthetic 140 450 -40 1.5 0.12
5w30
AMSOIL 168 480 -76 0.5 n/a
Castrol GTX 156 400 -35 0.80 0.12
Chevron Supreme 202 354 -46 0.96 0.11
Chevron Supreme Synt. 165 446 -72 1.1 0.12
Exxon Superflow HP 148 392 -22 0.70 0.11
Havoline Formula 3 158 420 -40 1.0 n/a
Mobil 1 165 445 -65 n/a n/a
Mystic JT8 161 390 -25 0.95 0.1
Quaker State 165 405 -35 0.9 n/a
Red Line 151 455 -49 n/a n/a
Shell Fire and Ice 167 405 -35 0.9 0.12
Unocal 151 414 -33 0.81 0.12
Valvoline All Climate 135 405 -40 1.0 0.11
Valvoline Turbo 158 405 -40 0.99 0.13
Valvoline Synthetic 160 435 -40 0.12
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So I should go with a high zinc count like the shell truck gaurd ?
or close like the Exxon Superflo Supreme or Shell Super 2000 ,valvoline turbo.
in the 10w30 .
or close like the Exxon Superflo Supreme or Shell Super 2000 ,valvoline turbo.
in the 10w30 .
Valvoline Race 130 410 -26 1.2 0.20 or Mobil1Vtwin 10w40
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go with 10W-30
I would use a 5w40 in the summer and a 5w30 in the winter if you drive enough miles to change it that often. If not then use a 5w40 year round.
JHZR2
Staff member
chevron delo 10w-30
How much zinc is in the delo 10w30 ?
I would use a 5w30/40 but i think i need more zinc for the flat tappet lifters .
maybe i shouldn't care but there is so much talk about older engine designs needing the zinc and it's not a problem with newer engines with roller lifters.
so whats us guys with older engines to do .
I would use a 5w30/40 but i think i need more zinc for the flat tappet lifters .
maybe i shouldn't care but there is so much talk about older engine designs needing the zinc and it's not a problem with newer engines with roller lifters.
so whats us guys with older engines to do .
anyone?
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